Add SonarCloud scan.

Author: bgrainger

.github/workflows/sonarcloud.yml

@@ -0,0 +1,60 @@
+name: SonarCloud
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+    - 'docs/**'
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+env:
+  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
+  DOTNET_CLI_TELEMETRY_OPTOUT: 1
+
+jobs:
+  build:
+    name: Scan
+    runs-on: windows-latest
+    steps:
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.11
+      - name: Set up .NET 5.0
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.x
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # fetch all revisions
+      - name: Cache SonarCloud packages
+        uses: actions/cache@v1
+        with:
+          path: ~\sonar\cache
+          key: ${{ runner.os }}-sonar
+          restore-keys: ${{ runner.os }}-sonar
+      - name: Cache SonarCloud scanner
+        id: cache-sonar-scanner
+        uses: actions/cache@v1
+        with:
+          path: .\.sonar\scanner
+          key: ${{ runner.os }}-sonar-scanner
+          restore-keys: ${{ runner.os }}-sonar-scanner
+      - name: Install SonarCloud scanner
+        if: steps.cache-sonar-scanner.outputs.cache-hit != 'true'
+        shell: powershell
+        run: |
+          New-Item -Path .\.sonar\scanner -ItemType Directory
+          dotnet tool update dotnet-sonarscanner --tool-path .\.sonar\scanner
+      - name: Restore Packages
+        run: dotnet restore
+      - name: Build and analyze
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        shell: powershell
+        run: |
+          .\.sonar\scanner\dotnet-sonarscanner begin /k:"mysql-net_MySqlConnector" /o:"mysql-net" /d:sonar.login="${{ secrets.SONAR_TOKEN }}" /d:sonar.host.url="https://sonarcloud.io"
+          dotnet build --configuration Release --no-restore
+          .\.sonar\scanner\dotnet-sonarscanner end /d:sonar.login="${{ secrets.SONAR_TOKEN }}"