add gitea runners unity builder

.gitea/workflows/build.yml

@@ -0,0 +1,40 @@
+name: Build project
+
+on: [push, pull_request]
+
+jobs:
+  buildForAllSupportedPlatforms:
+    name: Build for ${{ matrix.targetPlatform }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        targetPlatform:
+          - StandaloneWindows64 # Build a Windows 64-bit standalone.
+          - StandaloneLinux64 # Build a Linux 64-bit standalone.
+        unityVersion:
+          - 6000.0.37f1
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          lfs: true
+      - uses: actions/cache@v3
+        with:
+          path: Library
+          key: Library-${{ matrix.targetPlatform }}
+          restore-keys: Library-
+      - if: matrix.targetPlatform == 'Android'
+        uses: jlumbroso/free-disk-space@v1.3.1
+      - uses: game-ci/unity-builder@v4
+        env:
+          UNITY_LICENSE: ${{ secrets.UNITY_LICENSE }}
+          UNITY_EMAIL: ${{ secrets.UNITY_EMAIL }}
+          UNITY_PASSWORD: ${{ secrets.UNITY_PASSWORD }}
+        with:
+          targetPlatform: ${{ matrix.targetPlatform }}
+          unityVersion: ${{ matrix.unityVersion }}
+      - uses: actions/upload-artifact@v3
+        with:
+          name: Build-${{ matrix.targetPlatform }}
+          path: build/${{ matrix.targetPlatform }}