chore: enforce conventional commits and lint via commitlint (#788)

Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

.gitea/workflows/commitlint.yml

@@ -0,0 +1,16 @@
+name: commitlint
+
+on:
+  pull_request:
+    branches:
+      - "*"
+
+jobs:
+  check-and-test:
+    runs-on: ubuntu-latest
+    container: commitlint/commitlint:19.7.1
+    steps:
+      - uses: actions/checkout@v4
+      - name: check PR title
+        run: |
+          echo "${{ gitea.event.pull_request.title }}" | commitlint --config .commitlintrc.json