tests: improve tests structure

[codcod]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 95.29520% with 102 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/main.rs	0.00%	18 Missing ⚠️
src/commands/run.rs	95.37%	15 Missing ⚠️
src/github/repositories.rs	91.17%	15 Missing ⚠️
src/commands/validators.rs	95.91%	13 Missing ⚠️
src/utils/validators.rs	95.18%	13 Missing ⚠️
src/github/pull_requests.rs	94.37%	9 Missing ⚠️
src/git/clone.rs	80.00%	8 Missing ⚠️
src/github/client.rs	16.66%	5 Missing ⚠️
src/github/api.rs	97.35%	4 Missing ⚠️
src/commands/remove.rs	90.00%	1 Missing ⚠️
... and 1 more

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