Replace GitHub Actions workflow with Gitea workflow for notifying API on release

.github/workflows/add_release_to_site

@@ -1,21 +0,0 @@
-name: Notify API on Release
-
-on:
-  release:
-    types: [published]
-
-jobs:
-  notify-api:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Send API Call for New Release
-        run: |
-          curl -X POST http://melonx.org/api/new_release \
-               -H "Content-Type: application/json" \
-               -H "Authorization: Bearer ${{ secrets.MELONX_GITEA_API_KEY }}" \
-               -d '{
-                    "version_number": "${{ github.event.release.tag_name }}",
-                    "download_link": "${{ github.event.release.html_url }}",
-                    "changelog": "${{ github.event.release.body }}",
-                    "is_latest": true
-                  }'