Merge develop into main (#338)

### Cardputer:
- Fix keyboard issue with up/down button conflict when selecting switch
- Fix backlight flickering

### UI improvements
- Removed a 3 pixel border that went around the entire desktop environment
- Improved system layout (GuiService)
- Statusbar: improved layout (mainly margin/padding)
- Toolbar: fixed margin/padding of all buttons, fixed alignment of all content
- Improved layout/UI of many apps

### Other
- Update LVGL to 9.3.0 official release (was dev version)

Tactility/Include/Tactility/lvgl/Statusbar.h

@@ -1,14 +1,14 @@
 #pragma once
 
-#include "Tactility/app/AppContext.h"
+#include <Tactility/app/AppContext.h>
 
 #include <lvgl.h>
 
 namespace tt::lvgl {
 
-#define STATUSBAR_ICON_LIMIT 8
-#define STATUSBAR_ICON_SIZE 20
-#define STATUSBAR_HEIGHT (STATUSBAR_ICON_SIZE + 4) // 4 extra pixels for border and outline
+constexpr auto STATUSBAR_ICON_LIMIT = 8;
+constexpr auto STATUSBAR_ICON_SIZE = 20;
+constexpr auto STATUSBAR_HEIGHT = STATUSBAR_ICON_SIZE + 2;
 
 lv_obj_t* statusbar_create(lv_obj_t* parent);
 int8_t statusbar_icon_add(const std::string& image);