refactor: improve folder structure

[azat-io]

Description

Updated the project file structure.

Additional context

#417.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.
• Read contribution guidelines.

[azat-io]

Everything is currently working correctly except for one test in:
test/rules/sort-imports/read-closest-ts-config-by-path.test.ts

[azat-io]

Branch tree:
https://github.com/azat-io/eslint-plugin-perfectionist/tree/refactor/structure

[hugop95]

@azat-io PR for the test can be found here: #426.

[azat-io]

@hugop95 Nice, thank you!

Ready for review.

[hugop95]

@azat-io 👍 All good!

[suggestion] What do you think about creating an index.ts file in the utils folder?

[azat-io]

@hugop95 I don't have a clear opinion on this. There are no index.ts files in the utilities folders for rules (rules/sort-array-includes/), it seems logical to me that there is no index.ts in utils.

[hugop95]

@azat-io There is one in types, which is why I was asking 🙂. No big difference for me.

[azat-io]

Or we could remove index.ts from types/

[hugop95]

@azat-io

Or we could remove index.ts from types/

Fine by me as well 👍