chore - add sonar workflow

.github/workflows/sonar.yaml

@@ -0,0 +1,21 @@
+name: Sonar analysis
+on:
+  push:
+    branches:
+      - develop
+      - main
+  pull_request:
+    types: [opened, synchronize, reopened]
+jobs:
+  sonarcloud:
+    name: SonarCloud
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0 # Shallow clones should be disabled for a better relevancy of analysis
+      - name: SonarCloud Scan
+        uses: SonarSource/sonarcloud-github-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Needed to get PR information, if any
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}

sonar-project.properties

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+sonar.projectKey=InseeFr_Platine-My-Surveys
+sonar.organization=inseefr