Fixes

[ollamh]

• Fix installation and build package for hatchling backend
• Added typing hints to the code
• Small refactoring
• Fix tests
• Add installation instructions to the docs
• Added as_json kwarg to fetch method to return response.json() result

[ollamh]

Hi community! I saw this project while was looking for the python package for getting WAQI data in python. Got some issues when was trying to set the project to work for me, made few tweaks to make it run.