unit tests action added.

.github/workflows/unit tests.yml

@@ -0,0 +1,28 @@
+# This workflow will build a .NET project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net
+
+name: unit tests
+
+# Triggers the workflow on push or pull request events
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+
+    - name: Restore dependencies
+      run: dotnet restore
+
+    - name: Build
+      run: dotnet build --no-restore --configuration Release
+
+    - name: Test
+      run: dotnet test --no-build --verbosity normal --configuration Release