chore: re-enable snap CI, but only on workflow_dispatch ... (#1005)

.. for when snapcraft has a problem

.github/workflows/release.yml

@@ -84,34 +84,10 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: gh release upload ${{ steps.release.outputs.tag_name }} /Users/runner/work/musicpod/musicpod/build/macos/Build/Products/Release/musicpod.dmg
 
-  # Disabled until linux arm runners are available
-  # release_linux_edge:
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #     - uses: actions/checkout@v4
-  #       with:
-  #         fetch-depth: 5
-  #     - uses: subosito/flutter-action@v2
-  #       with:
-  #         channel: 'stable'
-  #         flutter-version: ${{env.FLUTTER_VERSION}}
-  #     - run: sudo apt update
-  #     - run: sudo apt install -y clang cmake curl libgtk-3-dev ninja-build pkg-config unzip libunwind-dev libmpv-dev
-  #     - run: flutter pub get
-
-  #     - uses: snapcore/action-build@v1
-  #       id: build
-  #     - uses: snapcore/action-publish@v1
-  #       if: steps.build.outcome == 'success'
-  #       env:
-  #         SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_STORE_CREDENTIALS }}
-  #       with:
-  #         snap: ${{ steps.build.outputs.snap }}
-  #         release: edge
+  # Disabled because it does not work
+  # AppImage
   #     - run: flutter clean
-  #     remove this when snap build is back, since this is included in the snapcraft musicpod->override-build phase
   #     - run: flutter build linux --release -v
-  #     Disabled because it does not work
   #     - uses: AppImageCrafters/build-appimage@master
   #       with:
   #         recipe: "./appimage/AppImageBuilder.yml"

.github/workflows/snap.yml

@@ -0,0 +1,34 @@
+name: Create Snap Package
+
+on:
+#   push:
+#     branches:
+#       - main
+  workflow_dispatch:
+
+env:
+  FLUTTER_VERSION: '3.24.3'
+
+jobs:
+  build_and_release_linux_snap_edge_amd64:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 5
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: 'stable'
+          flutter-version: ${{env.FLUTTER_VERSION}}
+      - run: sudo apt update
+      - run: sudo apt install -y clang cmake curl libgtk-3-dev ninja-build pkg-config unzip libunwind-dev libmpv-dev
+      - run: flutter pub get
+      - uses: snapcore/action-build@v1
+        id: build
+      - uses: snapcore/action-publish@v1
+        if: steps.build.outcome == 'success'
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_STORE_CREDENTIALS }}
+        with:
+          snap: ${{ steps.build.outputs.snap }}
+          release: edge