Add a action file to run coverage and upload the results

Author: php1ic

.github/workflows/coverage.yml

@@ -0,0 +1,31 @@
+name: Code Coverage
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.13']
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e '.[dev]'
+    - name: Generate coverage report
+      run: coverage run -m pytest -v && coverage xml
+    - name: Upload report to Codecov
+      uses: codecov/codecov-action@v5
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        fail_ci_if_error: true
+        files: ./coverage.xml
+