docs: Modernize README and reorganize documentation

- Rewrite README.md with modern, visual layout and centered design
- Add emoji icons and collapsible sections for better readability
- Create comprehensive documentation structure in docs/ folder
- Add detailed installation guide for all platforms
- Add configuration guide with all settings explained
- Add external tools integration documentation
- Add contributing guidelines for developers
- Improve visual appeal with tables and formatted content
- Highlight performance improvements and key features

Author: biancode