add gitea action to pack the crome extension

.gitea/workflows/package-extension.yml

@@ -0,0 +1,41 @@
+name: Package Extension
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+  workflow_dispatch:
+
+jobs:
+  package-extension:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Read extension version
+        id: version
+        run: |
+          version="$(python - <<'PY'
+          import json
+          from pathlib import Path
+
+          manifest = json.loads(Path("extension/manifest.json").read_text())
+          print(manifest["version"])
+          PY
+          )"
+          echo "version=$version" >> "$GITHUB_OUTPUT"
+
+      - name: Build extension archive
+        run: |
+          mkdir -p dist
+          cd extension
+          zip -r "../dist/browser-cli-extension-v${{ steps.version.outputs.version }}.zip" .
+
+      - name: Upload extension artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: browser-cli-extension-v${{ steps.version.outputs.version }}
+          path: dist/browser-cli-extension-v${{ steps.version.outputs.version }}.zip
+          if-no-files-found: error