SimpleWeather service : new weather implementation

This new implementation of the weather feature provides a new BLE API and a new weather service.
The API uses a single characteristic that allows companion apps to write the weather conditions (current and forecast for the next 5 days).
The SimpleWeather service exposes those data as std::optional fields.

This new implementation replaces the previous WeahterService.

The API is documented in docs/SimpleWeatherService.md.

src/components/ble/NimbleController.h

@@ -21,7 +21,7 @@
 #include "components/ble/NavigationService.h"
 #include "components/ble/ServiceDiscovery.h"
 #include "components/ble/MotionService.h"
-#include "components/ble/weather/WeatherService.h"
+#include "components/ble/SimpleWeatherService.h"
 #include "components/fs/FS.h"
 
 namespace Pinetime {
@@ -67,7 +67,7 @@ namespace Pinetime {
         return anService;
       };
 
-      Pinetime::Controllers::WeatherService& weather() {
+      Pinetime::Controllers::SimpleWeatherService& weather() {
         return weatherService;
       };
 
@@ -99,7 +99,7 @@ namespace Pinetime {
       AlertNotificationClient alertNotificationClient;
       CurrentTimeService currentTimeService;
       MusicService musicService;
-      WeatherService weatherService;
+      SimpleWeatherService weatherService;
       NavigationService navService;
       BatteryInformationService batteryInformationService;
       ImmediateAlertService immediateAlertService;