IMPROVEMENT: if not installed the tests are not found

.github/workflows/codecov.yml

@@ -17,6 +17,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip setuptools wheel
           python -m pip install pymavlink pytest pytest-cov coverage mock
+          pip install -U .
         
       - name: Run tests and collect coverage
         run: pytest --cov MethodicConfigurator