- Change output format from markdown code blocks to structured XML
- Add XML tags for better structure and parsing
- Update documentation and README
- Update version to 0.6.0
- Simplified the `get_tree_structure` function by extracting the tree command execution and filtering into separate functions: `run_tree_command` and `filter_tree_output`.
- Introduced `process_line`, `extract_full_path`, and `mark_non_empty_dirs` to enhance readability and maintainability of the filtering process.
- Updated `load_ignore_specs` to improve loading of ignore specifications from settings and .gitignore files.
- Added clipboard functionality to copy output content after saving.
- Cleaned up and clarified docstrings for better understanding of function purposes.
