feat: add GitExtractor component

[raphaelchristi]

This pull request introduces the GitExtractor component for analyzing Git repositories. Key features:

• Repository Info: Extracts branch, remotes, and commit details
• Statistics: Calculates file counts, sizes, and line numbers
• Directory Structure: Generates complete folder tree
• File Content: Extracts text files with binary handling
• Memory Safe: Implements content truncation for large repos
• Error Handling: Graceful error recovery and resource cleanup

[raphaelchristi]

Hi @ogabrielluiz ,

Thank you for the review! I've implemented the suggested changes:

• Converted all methods to async using async/await
• Added asynccontextmanager for the tmpdir operations
• Implemented automatic cleanup using the context manager

Let me know if you'd like me to make any additional adjustments to the implementation.

[edwinjosechittilappilly]

Good Work! @raphaelchristi Please follow up if the tests in CI Fails!