Test coverage with codecov

If codecov is set to "y", pytest-cov is added as a development dependency, and make test will run the tests and output a coverage report as coverage.xml. If include_github_actions is set to "y", coverage tests with codecov are added to the CI/CD pipeline. To enable this, sign up at codecov.io with your GitHub account. If codecov is configured to require token authentication for the upload, then follow the instructions for token generation and how to add it on your GitHub repository. Additionally, a codecov.yaml file is created, with the following defaults:

# Badge color changes from red to green between 70% and 100%
# PR pipeline fails if codecov falls with 1%

coverage:
  range: 70..100
  round: down
  precision: 1
  status:
    project:
      default:
        target: auto
        threshold: 1%

# Ignoring Paths
# --------------
# which folders/files to ignore
ignore:
  - "foo/bar.py"

If codecov is set to "n", pytest-cov is not added to the development dependencies and the github actions won't produce a coverage report.