chore: codecov 뱃지 추가 및 codeowners 추가

Codecov Report

Patch coverage has no change and project coverage change: +5.55% :tada:

Comparison is base (6fa1dca) 44.44% compared to head (ae0ac8b) 50.00%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1 +/- ## ========================================== + Coverage 44.44% 50.00% +5.55% ========================================== Files 3 2 -1 Lines 9 8 -1 ========================================== Hits 4 4 + Misses 5 4 -1 ``` [see 1 file with indirect coverage changes](https://app.codecov.io/gh/khu-khlug/SightBackEnd/pull/1/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=khu-khlug)

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khu-khlug / sight-backend

chore: codecov 뱃지 추가 및 codeowners 추가 #1

Codecov Report