basic config for codecov

[k-capehart]

• remove patch notifications - was showing failing statuses when not really needed
• target 80% code coverage (this is a base requirement for awesome-go)

[codecov[bot]]

Codecov Report

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

Project coverage is 84.34%. Comparing base (4d0aead) to head (1b21b20). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #76 +/- ## ======================================= Coverage 84.34% 84.34% ======================================= Files 7 7 Lines 1469 1469 ======================================= Hits 1239 1239 Misses 152 152 Partials 78 78 ```

:umbrella: View full report in Codecov by Sentry.
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