Add code coverage settings

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (0a5ecb9) to head (da56ec2).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## development #59 +/- ## ============================================= Coverage 100.00% 100.00% ============================================= Files 4 4 Lines 134 134 ============================================= Hits 134 134 ```

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