feat: enhance openshift support (#1063)

### Description of the change

Add options to values.yaml to make chart easier to install in restricted openshift environments

### Benefits

more people can run this

### Checklist

<!-- [Place an '[X]' (no spaces) in all applicable fields. Please remove unrelated fields.] -->

- [x] Parameters are documented in the `values.yaml` and added to the `README.md` using [readme-generator-for-helm](https://github.com/bitnami-labs/readme-generator-for-helm)
- [ ] Breaking changes are documented in the `README.md`
- [x] Helm templating unittests are added (required when changing anything in `templates` folder)
- [ ] Bash unittests are added (required when changing anything in `scripts` folder)
- [x] All added template resources MUST render a namespace in metadata

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-gitea/pulls/1063
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

templates/gitea/route.yaml

@@ -0,0 +1,52 @@
+{{- if .Values.route.enabled -}}
+{{- $fullName := include "gitea.fullname" . -}}
+apiVersion: route.openshift.io/v1
+kind: Route
+metadata:
+  name: {{ $fullName }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
+  labels:
+    {{- include "gitea.labels" . | nindent 4 }}
+  {{- with .Values.route.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.route.host }}
+  host: {{ tpl .Values.route.host . | quote }}
+  {{- end }}
+  {{- if .Values.route.path }}
+  path: {{ tpl .Values.route.path . | quote }}
+  {{- end }}
+  to:
+    kind: Service
+    name: {{ $fullName }}-http
+  port:
+    targetPort: http
+  wildcardPolicy: {{ .Values.route.wildcardPolicy }}
+  {{- with .Values.route.tls }}
+  {{- if .termination }}
+  tls:
+    termination: {{ .termination }}
+    {{- if .insecureEdgeTerminationPolicy }}
+    insecureEdgeTerminationPolicy: {{ .insecureEdgeTerminationPolicy }}
+    {{- end }}
+    {{- if .key }}
+    key: |
+      {{- .key | nindent 6 }}
+    {{- end }}
+    {{- if .certificate }}
+    certificate: |
+      {{- .certificate | nindent 6 }}
+    {{- end }}
+    {{- if .caCertificate }}
+    caCertificate: |
+      {{- .caCertificate | nindent 6 }}
+    {{- end }}
+    {{- if .destinationCACertificate }}
+    destinationCACertificate: |
+      {{- .destinationCACertificate | nindent 6 }}
+    {{- end }}
+  {{- end }}
+  {{- end }}
+{{- end }}