Major Refactor and New Features: Modularization, Enhanced CLI, and Logging

Hello,

I've found your tool incredibly useful and have contributed some enhancements to extend its functionality:

Enhancements and New Features:

Improved Include/Exclude Capabilities: Implemented with glob patterns for flexible file selection.
New CLI Options:
- --include: Specify patterns to include files.
- --exclude: Specify patterns to exclude files.
- --include-priority: Prioritize file inclusion in conflicts.
- --no-clipboard: Disable clipboard usage, ideal for remote installations.
Cross-Compatibility Clipboard Integration: Integrated arboard for cross-platform support.

Code Improvements:

Code Refactoring: Reorganized the codebase into modules (git, lib, main, token, template, path, filter) for better readability and maintainability.
Function Renaming and Relocation: Updated function names and locations for clarity.
Consolidation of CLI Options: Merged various CLI options into --include and --exclude for simplicity.

Quality Assurance:

Unit Tests: Added tests to ensure reliability and ease future testing.
Enhanced Error Handling: Improved using 'anyhow' for better context in debugging.
Logging: Implemented logging with the 'log' crate for enhanced traceability.

Documentation:

Comprehensive Documentation: Added to enhance usability and support future development.

Semantic Versioning: Due to breaking API changes

Migration Notes:

CLI Changes: Users should transition to the new --include and --exclude options, replacing the previous filtering options.

Thank you for creating such a fantastic tool! I hope these improvements further enhance its capabilities.

Best regards,

Olivier D'Ancona

mufeedvh / code2prompt