:recycle: use uber-go/mock and output typed mock

[codecov[bot]]

Codecov Report

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

Project coverage is 73.81%. Comparing base (6eefd2c) to head (3bb5d99). Report is 7 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #722 +/- ## ========================================== - Coverage 74.51% 73.81% -0.71% ========================================== Files 52 41 -11 Lines 4163 3704 -459 ========================================== - Hits 3102 2734 -368 + Misses 909 819 -90 + Partials 152 151 -1 ``` | [Flag](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/722/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/722/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `73.81% <ø> (-0.71%)` | :arrow_down: | | [unit](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/722/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `73.81% <ø> (-0.71%)` | :arrow_down: | 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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