Add .NET / SonarQube scan CI workflow

.github/workflows/dotnet-build.yml

@@ -0,0 +1,58 @@
+name: .NET
+
+on:
+  pull_request:
+
+env:
+  JAVA_VERSION: '21'
+  DOTNET_VERSION: '8.0.x'
+
+jobs:
+  build:
+    name: Build .NET, Test and Analyse
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0 # Shallow clones disabled for a better relevancy of SC analysis
+
+    - name: Setup .NET ${{ env.DOTNET_VERSION }}
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: ${{ env.DOTNET_VERSION }}
+
+    - name: Set up JDK ${{ env.JAVA_VERSION }}
+      uses: actions/setup-java@v4
+      with:
+        java-version: ${{ env.JAVA_VERSION }}
+        distribution: 'microsoft'
+
+    - name: Cache SonarCloud packages
+      uses: actions/cache@v4
+      with:
+        path: ~\sonar\cache
+        key: ${{ runner.os }}-sonar
+        restore-keys: ${{ runner.os }}-sonar
+
+    - name: Install SonarCloud scanners
+      run: dotnet tool install --global dotnet-sonarscanner
+
+    - name: Install dotnet reportgenerator
+      run: dotnet tool install --global dotnet-reportgenerator-globaltool
+
+    - name: Add nuget package source
+      run: dotnet nuget add source --username USERNAME --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/DFE-Digital/index.json"
+
+    - name: Restore dependencies
+      run: dotnet restore Dfe.Complete.sln
+
+    - name: Build, Test and Analyze
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+      run: |
+        dotnet-sonarscanner begin /d:sonar.scanner.skipJreProvisioning=true /k:"DFE-Digital_complete-api" /o:"dfe-digital" /d:sonar.token="${{ secrets.SONAR_TOKEN }}" /d:sonar.host.url="https://sonarcloud.io" /d:sonar.coverageReportPaths=./src/CoverageReport/SonarQube.xml
+        dotnet build --no-restore
+        dotnet test --no-build --verbosity normal --collect:"XPlat Code Coverage"
+        reportgenerator -reports:"./**/coverage.cobertura.xml" -targetdir:./src/CoverageReport -reporttypes:SonarQube
+        dotnet-sonarscanner end /d:sonar.token="${{ secrets.SONAR_TOKEN }}"