プロジェクト名とコンテスト名の重複を禁止して、名前の上限を伸ばした

[Tennessine699]

resolves #703 resolves #712

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 27.88462% with 75 lines in your changes missing coverage. Please review.

Project coverage is 72.88%. Comparing base (49b4548) to head (0f5ef59). Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/infrastructure/migration/v2.go	4.05%	70 Missing and 1 partial :warning:
internal/infrastructure/repository/contest_impl.go	80.00%	1 Missing and 1 partial :warning:
internal/infrastructure/repository/project_impl.go	80.00%	1 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #723 +/- ## ========================================== + Coverage 72.51% 72.88% +0.37% ========================================== Files 42 42 Lines 3842 3843 +1 ========================================== + Hits 2786 2801 +15 + Misses 903 886 -17 - Partials 153 156 +3 ``` | [Flag](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/723/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/723/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `72.88% <27.88%> (+0.37%)` | :arrow_up: | | [unit](https://app.codecov.io/gh/traPtitech/traPortfolio/pull/723/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=traPtitech) | `72.88% <27.88%> (+0.37%)` | :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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[ras0q]

projectの方に投げたreviewはcontestも同様