refactor(templates): move the templates out of the gitea subdirectory

The `templates/gitea` subdirectory did not group anything meaningful, since every template of this chart belongs to
Gitea. It only duplicated the chart name in every path and forced the unit tests to spell out
`templates/gitea/<name>.yaml`, while `_helpers.tpl` and `NOTES.txt` already lived directly in `templates`.

All templates now live in `templates`, which matches the layout of the bundled sub-charts and the Helm defaults.

The checksum helper in `templates/_secrets.tpl` built its include path from `$root.Template.BasePath` and therefore
carried the subdirectory in a `printf` format string instead of a literal path. Without adjusting it the chart failed to
render with "no template gitea/templates/gitea/secret_config.yaml associated with template gotpl".

Co-authored-by: Copilot <copilot@github.com>

unittests/helm/deployment/basic.yaml

@@ -3,16 +3,16 @@ release:
   name: gitea-unittests
   namespace: testing
 templates:
-  - templates/gitea/deployment.yaml
-  - templates/gitea/secret_admin.yaml
-  - templates/gitea/secret_config.yaml
-  - templates/gitea/secret_gpg.yaml
-  - templates/gitea/secret_init.yaml
-  - templates/gitea/secret_inlineConfig.yaml
-  - templates/gitea/secret_metrics.yaml
+  - templates/deployment.yaml
+  - templates/secret_admin.yaml
+  - templates/secret_config.yaml
+  - templates/secret_gpg.yaml
+  - templates/secret_init.yaml
+  - templates/secret_inlineConfig.yaml
+  - templates/secret_metrics.yaml
 tests:
   - it: renders a deployment
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - hasDocuments:
           count: 1
@@ -21,14 +21,14 @@ tests:
           apiVersion: apps/v1
           name: gitea-unittests
   - it: renders no deployment when disabled
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.enabled: false
     asserts:
       - hasDocuments:
           count: 0
   - it: deployment labels are set
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.labels:
         hello: world
@@ -46,7 +46,7 @@ tests:
           content:
             hello: world
   - it: deployment labels are not in selector matchLabels
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.labels:
         custom-label: custom-value
@@ -58,7 +58,7 @@ tests:
             app.kubernetes.io/name: gitea
             app.kubernetes.io/instance: gitea-unittests
   - it: deployment labels are always rendered
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - isSubset:
           path: metadata.labels
@@ -68,12 +68,12 @@ tests:
             app.kubernetes.io/instance: gitea-unittests
             app.kubernetes.io/managed-by: Helm
   - it: deployment annotations are undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: metadata.annotations
   - it: deployment annotations are set
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.annotations:
         hello: world
@@ -86,7 +86,7 @@ tests:
     asserts:
       - notExists:
           path: spec.template.spec.nodeSelector
-        template: templates/gitea/deployment.yaml
+        template: templates/deployment.yaml
   - it: nodeSelector is defined
     set:
       deployment.nodeSelector:
@@ -98,14 +98,14 @@ tests:
           content:
             foo: bar
             bar: foo
-        template: templates/gitea/deployment.yaml
+        template: templates/deployment.yaml
   - it: affinity is undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.affinity
   - it: affinity is defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.affinity:
         nodeAffinity:
@@ -129,12 +129,12 @@ tests:
                         values:
                           - linux
   - it: dnsConfig is undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.dnsConfig
   - it: dnsConfig is defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.dnsConfig:
         nameservers:
@@ -152,12 +152,12 @@ tests:
               - name: ndots
                 value: "2"
   - it: priorityClassName is undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.priorityClassName
   - it: priorityClassName is defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.priorityClassName: high-priority
     asserts:
@@ -165,12 +165,12 @@ tests:
           path: spec.template.spec.priorityClassName
           value: high-priority
   - it: schedulerName is undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.schedulerName
   - it: schedulerName is defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.schedulerName: stork
     asserts:
@@ -178,7 +178,7 @@ tests:
           path: spec.template.spec.schedulerName
           value: stork
   - it: strategy defaults to a rolling update
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - equal:
           path: spec.strategy
@@ -188,7 +188,7 @@ tests:
               maxUnavailable: 0
               maxSurge: 100%
   - it: strategy omits rollingUpdate for other strategy types
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.strategy.type: Recreate
     asserts:
@@ -197,12 +197,12 @@ tests:
           value:
             type: Recreate
   - it: tolerations are undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.tolerations
   - it: tolerations are defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.tolerations:
         - key: database/type
@@ -218,12 +218,12 @@ tests:
               value: postgres
               effect: NoSchedule
   - it: topologySpreadConstraints are undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.topologySpreadConstraints
   - it: topologySpreadConstraints are defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.topologySpreadConstraints:
         - topologyKey: kubernetes.io/hostname
@@ -244,7 +244,7 @@ tests:
                   app.kubernetes.io/instance: gitea-unittests
 
   - it: "injects TMP_EXISTING_ENVS_FILE as environment variable to 'init-app-ini' init container"
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - contains:
           path: spec.template.spec.initContainers[1].env
@@ -252,7 +252,7 @@ tests:
             name: TMP_EXISTING_ENVS_FILE
             value: /tmp/existing-envs
   - it: "injects ENV_TO_INI_MOUNT_POINT as environment variable to 'init-app-ini' init container"
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - contains:
           path: spec.template.spec.initContainers[1].env
@@ -260,7 +260,7 @@ tests:
             name: ENV_TO_INI_MOUNT_POINT
             value: /env-to-ini-mounts
   - it: "deployment.gitea.env is injected into all init containers and the gitea container"
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.gitea.env:
         - name: VARIABLE
@@ -287,7 +287,7 @@ tests:
             name: VARIABLE
             value: my-value
   - it: CPU resources are defined as well as GOMAXPROCS
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.gitea.resources:
         limits:
@@ -315,7 +315,7 @@ tests:
               cpu: 100ms
               memory: 100Mi
   - it: container resources default to an empty map and GOMAXPROCS is omitted
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - equal:
           path: spec.template.spec.containers[0].resources
@@ -329,12 +329,12 @@ tests:
                 divisor: "1"
                 resource: limits.cpu
   - it: pod level resources are undefined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notExists:
           path: spec.template.spec.resources
   - it: pod level resources are defined
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       deployment.resources:
         limits:
@@ -354,7 +354,7 @@ tests:
               cpu: 250m
               memory: 256Mi
   - it: Init containers have correct volumeMount path
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       initContainersScriptsVolumeMountPath: "/custom/init/path"
     asserts:
@@ -365,7 +365,7 @@ tests:
           path: spec.template.spec.initContainers[*].volumeMounts[?(@.name=="config")].mountPath
           value: "/custom/init/path"
   - it: Init containers have correct volumeMount path if there is no override
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - equal:
           path: spec.template.spec.initContainers[*].volumeMounts[?(@.name=="init")].mountPath