Add detailed unit configuration #104
Description
Currently the app supports:
- hours: 24h / 12h
- units: metric / imperial / hybrid
How it should be:
- time: 24h / 12h
- date: dd-mm-yyyy / yyyy-mm-dd / mm/dd/yyyy
- temperature: °C / °F
- wind speed: km/h / mph / m/s
- precipitation: mm / in
- pressure: hPa / mmHg
- distance: km / mi
Reasoning: countries relying on metric units have different preferences regarding wind speed and pressure. For example, in Russia, wind speed is typically specified in m/s, and pressure in mmHg, while everything else is normal.
It's also weird that mmHg is represented as "mb/hPa" in metric, and "mb" in hybrid, while it's basically the same unit. Maybe "mb" can be a separate option (equal to mmHg), just for clarity.