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.
Fixes#1467 "Double tapping PineTimeStyle steps style button sends watch to sleep"
Double tap is disabled on the color settings screen by checking if the Rnd button is visible, but this didn't work for the options screen as the Rnd button isn't visible. I've changed it to check if the Close button is visible instead, which is used on both settings screens, and resolves the bug. I also changed the button used to disable the long press behaviour which was an as-yet-undiscovered bug which would have allowed the long press action to be used when the options screen was visible.
value_str is a way to add text on a button without a separate label.
This saves having an extra label object, but uses more memory and is
removed in LVGL8
When the screen switches, the full screen needs to be refreshed for the
hardware scrolling to work. This was enforced with backgroundLabels, but
is simpler to do with a rounder function.
