feat(easel): implement multiple weather providers

gallery/sketch/bundle.py

@@ -20,7 +20,7 @@ class ApiBundle:
             if isinstance(value, api_type):
                 if provider is None or provider == value.provider:
                     return value
-        raise ValueError(api_type)
+        raise ValueError(api_type, provider)
 
     def get_weather(self, provider: str | None = None) -> WeatherApi:
         return self.get_api(WeatherApi, provider)