Favicons

Changed
- Bumped Typer maximum version to 1.0

Changed
- Bumped Rich maximum version to 11.0
- Added `py.typed`

Added
- Auto create output_directory & parents if it doesn't exist.

Fixed
- SVG Support

Added
- Command Line Interface

Added
- More docs

Changed
- Export exceptions from top level
- Icon Properties uses Tuple for dimensions instead of List
- Add mypy type checking

Fixed
- Type annotations and inconsistent type issues pointed out by mypy