Added sonarcloud workflow.

.github/workflows/sonarcloud.yml

@@ -0,0 +1,28 @@
+name: SonarCloud analysis
+
+on: [push]
+
+jobs:
+  sonarcloud:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '6.x'
+      - name: Restore dependencies
+        run: dotnet restore
+      - name: Build
+        run: dotnet build --no-restore
+      - name: Install SonarScanner for .NET
+        run: dotnet tool install --global dotnet-sonarscanner
+      - name: Run SonarCloud Scan
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        run: |
+          dotnet-sonarscanner begin /k:"infobip_infobip-api-csharp-client" /o:"infobip" /d:sonar.login="${{ secrets.SONAR_TOKEN }}"
+          dotnet build
+          dotnet-sonarscanner end /d:sonar.login="${{ secrets.SONAR_TOKEN }}"