[Feature Request] Add wind direction display to weather provider

[OliW07]

Describe the problem/motivation

The Open-Meteo API returns wind_direction but it's not currently exposed in the weather output.

Describe the solution you'd like

1. Add wind_direction to WeatherOutput struct (weather_provider.rs)
2. Add windDirection to TypeScript WeatherOutput type

Optional:
Open-Meteo returns wind direction in degrees (0-360). Could convert to cardinal direction (N, NE, E, etc.) for display (probably a separate field in the struct).

Alternatives considered

No response