chore(sonar): add SonarQube analysis workflow

Author: sonarqube-automation-elbid[bot]

.github/workflows/build.yml

@@ -0,0 +1,45 @@
+name: SonarQube
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - develop
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  sonarqube:
+    name: SonarQube Scan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install dependencies (best effort)
+        continue-on-error: true
+        run: |
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+          if [ -f pyproject.toml ]; then pip install . || true; fi
+          pip install coverage pytest || true
+
+      - name: Run tests with coverage (best effort)
+        continue-on-error: true
+        run: |
+          if [ -d tests ] || [ -d test ]; then
+            coverage run -m pytest || true
+            coverage xml -o coverage.xml || true
+          fi
+
+      - name: SonarQube Scan
+        uses: SonarSource/sonarqube-scan-action@v5
+        env:
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}