Add SonarCloud workflow (coverage)

Signed-off-by: Serhii Horodilov <sgorodil@gmail.com>

Author: shorodilov

.github/workflows/sonarcloud.yml

@@ -0,0 +1,34 @@
+name: Collect coverage report for SonarCloud
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+      - devel
+
+jobs:
+  sonarcloud:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.9"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pytest coverage
+      - name: Collect coverage
+        run: |
+          coverage run -m pytest
+          coverage xml
+      - name: Upload coverage report
+        uses: actions/upload-artifact@v2
+        with:
+          name: coverage
+          path: ./coverage.xml

.gitignore

@@ -24,6 +24,7 @@ __pycache__
 # coverage reports
 *.coverage.db
 *.coverage
+coverage.*
 
 # local databases
 pgdata/