add workflow

.forgejo/workflows/release.yaml

@@ -0,0 +1,33 @@
+name: Build Game
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        preset: ["Windows Desktop", "Linux"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build
+        id: build
+        uses: mlm-games/godot-build-action@v1
+        with:
+          EXPORT_PRESET_NAME: ${{ matrix.preset }}
+          GODOT_VER: ""                    # auto-detect latest stable 4.x
+          DEBUG_MODE: "false"              # or "true"
+          GODOT_PREVIEW_BUILDS: "false"    # set "true" to use preview builds
+          EXPORT_DIR: builds
+
+      - name: Upload builds
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.preset }}-build
+          path: ${{ steps.build.outputs.build }}