Docdog

Fixed
-Fixed bug in `main.py` with relation to `find_project_root` function. Looking in the wrong dir to generate the reports.
-Modified `test_find_project_root`

Added
- Added lru cache and multi-threading

Fixed
- Removed openai api

Added
- Initial release of DocDog
- Core functionality for AI-assisted README generation
- Project chunking capabilities using pykomodo
- CLI interface with basic options
- Validation phase for quality control
- Cleared tests

Fixed
- Proper handling of empty README generation
- Fixed path handling in project root detection