added test workflow

.gitea/workflows/test-dotnet.yaml

@@ -0,0 +1,36 @@
+name: .NET Test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup .NET
+      uses: https://github.com/actions/setup-dotnet@v3
+      with:
+        dotnet-version: 8.x
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build --no-restore
+
+    - name: Test
+      run: dotnet test --no-build --verbosity normal --logger trx --results-directory "TestResults-8.x"
+
+    - name: Upload dotnet test results
+      uses: actions/upload-artifact@v3
+      with:
+        name: dotnet-results-8.x
+        path: TestResults-8.x
+        if: ${{ always() }}
+        retention-days: 30