refactor: AccountモジュールのServiceをCat.doTを使って書き直した

[laminne]

close #1712

What does this PR do?

• AccountモジュールのServiceをCat.doTを使って書き直しました

Additional information

• メモ: RepositoryがOptionを返すせいで面倒になっている箇所があるので早めになおす

[codecov]

Codecov Report

❌ Patch coverage is 92.10526% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 45.23%. Comparing base (c6281af) to head (f22c928).

Files with missing lines	Patch %	Lines
pkg/accounts/service/verifyToken.ts	58.82%	7 Missing ⚠️
pkg/accounts/service/silence.ts	87.50%	2 Missing ⚠️
pkg/accounts/service/authenticate.ts	87.50%	1 Missing ⚠️
pkg/accounts/service/edit.ts	96.96%	1 Missing ⚠️
pkg/accounts/service/register.ts	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1725      +/-   ##
==========================================
- Coverage   45.53%   45.23%   -0.30%     
==========================================
  Files         159      159              
  Lines        5749     5597     -152     
  Branches      927      844      -83     
==========================================
- Hits         2618     2532      -86     
+ Misses       3131     3065      -66     

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[MikuroXina]

この処理は Result.optionErr で書けます. unfollow.ts の方も同様です.

Suggested change

	return Result.isErr(res) ? Option.some(res[1]) : Option.none();
	return Result.optionErr(res);