refactor: add @fileoverviews and structured comments to .js files

[lumirlumir]

This pull request includes several documentation improvements and code organization changes across multiple files to enhance readability and maintainability. The most important changes include adding file-level JSDoc comments, organizing code sections with comments, and ensuring consistent exports.

Documentation improvements:

• packages/clang-format-git-python/src/cli.js: Added a file-level JSDoc comment to provide an overview of the file's purpose.
• packages/clang-format-git-python/src/index.js: Added a file-level JSDoc comment to describe the entry file for the package.
• packages/clang-format-git-python/src/utils/gitClangFormatPath.js: Added a file-level JSDoc comment to explain the APIs provided by the file.

Code organization:

• packages/clang-format-git/src/cli.js: Added comments to separate require and execution sections, and included a file-level JSDoc comment.
• packages/clang-format-git/src/utils/getGitClangFormatPath.js: Added comments to organize require, declaration, and export sections, and included a file-level JSDoc comment.

[github-actions]

Labels have been automatically applied based on the conventional commit types.🏷️

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (779cc00) to head (fcd7d90).
Report is 1 commits behind head on main.

@@            Coverage Diff            @@
##              main      #145   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           11        11           
  Lines           61        64    +3     
=========================================
+ Hits            61        64    +3     

Files with missing lines	Coverage Δ
packages/clang-format-git-python/src/cli.js	100.00% <ø> (ø)
packages/clang-format-git-python/src/index.js	100.00% <ø> (ø)
...-format-git-python/src/utils/gitClangFormatPath.js	100.00% <ø> (ø)
packages/clang-format-git/src/cli.js	100.00% <ø> (ø)
packages/clang-format-git/src/index.js	100.00% <ø> (ø)
...lang-format-git/src/utils/getGitClangFormatPath.js	100.00% <100.00%> (ø)
...s/clang-format-git/src/utils/gitClangFormatPath.js	100.00% <ø> (ø)
packages/clang-format-node/src/cli.js	100.00% <ø> (ø)
packages/clang-format-node/src/index.js	100.00% <ø> (ø)
...ges/clang-format-node/src/utils/clangFormatPath.js	100.00% <100.00%> (ø)
... and 1 more

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