Add Gitea CI/CD workflows for automated releases

Add automated release creation and versioning workflows similar to the fourthwall plugin.

Features:
- Automatically creates a release on every push to main branch
- Generates release notes from commit messages since last tag
- Updates plugin version using timestamp-based versioning (YYYY.MM.DD-HHMM)
- Creates and uploads plugin zip file to release
- Supports manual release creation/editing to update version

Workflows:
- .gitea/workflows/release.yml - Triggers on push to main
- .gitea/workflows/update-version.yml - Triggers on release creation/edit

The release zip will be automatically picked up by the Gitea auto-updater for WordPress.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitea/workflows/update-version.yml

@@ -0,0 +1,51 @@
+name: Update Plugin Version
+
+on:
+  release:
+    types: [created, edited]
+
+jobs:
+  update-version:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Get release tag
+        id: get_tag
+        run: echo "TAG=${GITEA_REF#refs/tags/}" >> $GITEA_ENV
+
+      - name: Update version in plugin file
+        run: |
+          # Replace version in main plugin file
+          sed -i "s/Version: .*/Version: ${{ env.TAG }}/" twilio-wp-plugin.php
+
+          # Verify change
+          grep "Version:" twilio-wp-plugin.php
+
+      - name: Commit changes
+        run: |
+          git config --local user.email "action@gitea.com"
+          git config --local user.name "Gitea Action"
+          git add twilio-wp-plugin.php
+          git commit -m "Update version to ${{ env.TAG }}" || echo "No changes to commit"
+          git push || echo "Nothing to push"
+
+      - name: Create plugin zip
+        run: |
+          mkdir -p /tmp/twilio-wp-plugin
+          rsync -av --exclude=".git" --exclude=".gitea" --exclude="build" . /tmp/twilio-wp-plugin/
+          cd /tmp
+          zip -r $GITEA_WORK_DIR/twilio-wp-plugin.zip twilio-wp-plugin
+
+      - name: Upload zip to release
+        uses: actions/upload-release-asset@v1
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        with:
+          upload_url: ${{ gitea.event.release.upload_url }}
+          asset_path: twilio-wp-plugin.zip
+          asset_name: twilio-wp-plugin.zip
+          asset_content_type: application/zip