Add GitHub Actions CI workflow for automated testing

Co-authored-by: clayschaad <11883505+clayschaad@users.noreply.github.com>

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, develop, "copilot/*" ]
+  pull_request:
+    branches: [ main, develop ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup .NET 9.0
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '9.0.x'
+    
+    - name: Restore dependencies
+      run: dotnet restore
+      
+    - name: Build
+      run: dotnet build --no-restore --configuration Release
+      
+    - name: Test
+      run: dotnet test --no-build --configuration Release --verbosity normal --collect:"XPlat Code Coverage"
+      
+    - name: Upload coverage reports
+      uses: codecov/codecov-action@v4
+      if: success()
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        files: '**/coverage.cobertura.xml'
+        fail_ci_if_error: false