Add github action to upload pack upon release

.github/workflows/packsquash.yml

@@ -0,0 +1,31 @@
+name: Optimize resource pack
+on:
+  release:
+    types: [published]
+jobs:
+  packsquash:
+    name: Optimize resource pack
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0 # A non-shallow repository clone is required
+      - name: Run PackSquash
+        uses: ComunidadAylas/PackSquash-action@v3
+        with:
+          path: source
+      - name: Download optimized pack
+        uses: actions/download-artifact@v3
+        with:
+          name: Optimized pack
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: ./pack.zip
+          asset_name: ${{ github.event.repository.name }}-1.16.X-${{ github.event.release.tag_name }}.zip
+          asset_content_type: application/zip