Add max depth parameters to directory summarization functions

[Maralai]

Works to resolve #5

This pull request includes multiple changes to the summarizeGPT/summarizeGPT.py file to add new functionality for controlling the depth of directory traversal. The most important changes include adding new parameters to existing functions, updating the main function to handle these new parameters, and modifying the directory traversal logic to respect the specified depth limits.

Enhancements to depth control:

• summarizeGPT/summarizeGPT.py: Added tree_depth and file_depth parameters to the summarize_directory and get_tree_view functions to limit the depth of directory traversal. [1] [2]
• summarizeGPT/summarizeGPT.py: Updated get_file_contents function to include max_depth parameter and modified the traversal logic to skip directories exceeding the specified depth.
• summarizeGPT/summarizeGPT.py: Updated the main function to add new command-line arguments (--max-depth, --tree-depth, --file-depth) and handle these arguments appropriately. [1] [2]

[Maralai]

Works!