Add Gitea workflow

.gitea/workflows/build.yml

@@ -0,0 +1,20 @@
+name: Build
+
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: raspberry-pi
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build
+        run: dotnet build -c Release
+
+      - name: Upload DLL
+        uses: actions/upload-artifact@v4
+        with:
+          name: AmongUsMod
+          path: "**/bin/Release/**/*.dll"