fix(ci): add code coverage action

Author: jguerreiro

.github/workflows/test-lint.yml

@@ -47,6 +47,13 @@ jobs:
         run: |
           pipenv run coverage run --source pygitguardian -m nose tests
           pipenv run coverage report --fail-under=80
+          pipenv run coverage xml
+      - uses: codecov/codecov-action@v1
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          name: codecov-umbrella
+          fail_ci_if_error: false
 
   release:
     runs-on: ubuntu-latest

.gitignore

@@ -23,6 +23,7 @@ pip-log.txt
 # Unit test / coverage reports
 .coverage
 .tox
+coverage.xml
 nosetests.xml
 
 # Translations