Add .NET build and test workflow with artifact

.gitea/workflows/ci.yml

@@ -11,8 +11,16 @@ jobs:
           dotnet-version: '8.0.x'
       - run: dotnet restore
       - run: dotnet build
+      - run: dotnet test
+      - run: dotnet publish -o app -r linux-x64 --self-contained true /p:PublishSingleFile=true,AssemblyName=app
+      - run: tar cf app.tar app/
+      - uses: actions/upload-artifact@v3
+        with:
+
   test:
     steps:
-      - name: trying to run
-        run: dotnet run
-      - run: dotnet build         
+      - uses: actions/download-artifact@v3
+        with:
+          name: app.tar
+      - run: tar xf app.tar/app.tar
+      - run: ./app/app