Add units logic for settings to toggle

Injects settings to main app

Settings widget to change units

Add gradient container to manipulate the color of the theme

Introduce theme bloc

Remove unused readme

Adjust and remove unused test

Refresh weather state and event

Weather widget

Initial widgets to build the weather

Assets for showing the weather

Yield fetch weather event using bloc

Initial implementation of weather bloc

Add index to export files

Add repository layer to abstract data fetching