:recycle: move repository test to infrastructure/repository

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 58.13953% with 18 lines in your changes missing coverage. Please review.

Project coverage is 72.03%. Comparing base (25fb311) to head (739e927). Report is 1 commits behind head on main.

:exclamation: Current head 739e927 differs from pull request most recent head 691adb1

Please upload reports for the commit 691adb1 to get more accurate results.

Files	Patch %	Lines
util/testutils/db.go	58.13%	12 Missing and 6 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #681 +/- ## =========================================== + Coverage 33.42% 72.03% +38.60% =========================================== Files 54 54 Lines 4278 4291 +13 =========================================== + Hits 1430 3091 +1661 + Misses 2818 1032 -1786 - Partials 30 168 +138 ``` | [Flag](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/681/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | Coverage Δ | | |---|---|---| | [integration](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/681/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `72.03% <58.13%> (+38.60%)` | :arrow_up: | | [unit](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/681/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `72.03% <58.13%> (+38.60%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech#carryforward-flags-in-the-pull-request-comment) to find out more.

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