Combine terminal UI improvements and weather addition

[JustScott]

Since the three correlating PRs: #2134, #2135, and #2204 have all been accepted into the 1.16.0 release, but won't cleanly merge together, I've created this PR with the conflicts solved while preserving a seperate commit for each.

[github-actions]

Build size and comparison to main:

Section	Size	Difference
text	379896B	768B
data	948B	0B
bss	22536B	0B

Run in InfiniEmu

[JustScott]

Just a topic of discussion: do you think it would be worthwhile to add a weatherYellow color to InfinitimeTheme.h for a consistent weather color across the code base? I'm using #ffdd00 as my weather color, so the change would look like this:

InfiniTimeTheme.h

static constexpr lv_color_t weatherYellow = LV_COLOR_MAKE(0xff, 0xdd, 0x00);

WatchFaceTerminal.cpp

currentWeather = weatherService.Current();
  if (currentWeather.IsUpdated()) {
    auto optCurrentWeather = currentWeather.Get();
    if (optCurrentWeather) {
      int16_t temp = optCurrentWeather->temperature.Celsius();
      char tempUnit = 'C';
      if (settingsController.GetWeatherFormat() == Controllers::Settings::WeatherFormat::Imperial) {
        temp = optCurrentWeather->temperature.Fahrenheit();
        tempUnit = 'F';
      }
      lv_label_set_text_fmt(weather,
                            "#ffffff [WTHR]# %d°%c %s#",
                            temp,
                            tempUnit,
                            Symbols::GetSimpleCondition(optCurrentWeather->iconId));
      lv_obj_set_style_local_text_color(weather, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Colors::weatherYellow);

    } else {
      lv_label_set_text_static(weather, "#ffffff [WTHR]# ---");
      lv_obj_set_style_local_text_color(weather, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Colors::gray);
    }
  }

[mark9064]

I think there's a deeper question: what are the InfiniTime temperature colours, is there a continuous scale, and when discrete steps are needed what temperature does it change at

The current thresholds of 0, 4 and 27 seem quite odd to me. 5 and 26°C aren't exactly the same, and I'm not sure about the current colours either

What do you think about it?