* docs: add tree-sitter grammar and editor support documentation
- Add comprehensive Editor Support section to README.md
- Document tree-sitter-toon grammar with usage examples
- Include VS Code extension information
- Add Neovim configuration example for tree-sitter
- Update tools-and-playgrounds.md with detailed editor support
- Add Editor Support to table of contents
Resolves#143Resolves#99
* docs: simplify
---------
Co-authored-by: Johann Schopplich <mail@johannschopplich.com>