Implement UI scaling and more (#501)

**New Features**
 * Runtime font accessors and new symbol fonts for text, launcher, statusbar, and shared icons.
 * Added font height base setting to device.properties
 * Text fonts now have 3 sizes: small, default, large

**Improvements**
 * Renamed `UiScale` to `UiDensity`
 * Statusbar, toolbar and many UI components now compute heights and spacing from fonts/density.
 * SSD1306 initialization sequence refined for more stable startup.
 * Multiple image assets replaced by symbol-font rendering.
 * Many layout improvements related to density, font scaling and icon scaling
 * Updated folder name capitalization for newer style

Tactility/Source/app/crashdiagnostics/CrashDiagnostics.cpp

@@ -28,7 +28,7 @@ public:
 
     void onShow(AppContext& app, lv_obj_t* parent) override {
         auto* display = lv_obj_get_display(parent);
-        int32_t parent_height = lv_display_get_vertical_resolution(display) - lvgl::STATUSBAR_HEIGHT;
+        int32_t parent_height = lv_display_get_vertical_resolution(display) - lvgl::statusbar_get_height();
 
         lv_obj_add_event_cb(parent, onContinuePressed, LV_EVENT_SHORT_CLICKED, nullptr);
         auto* top_label = lv_label_create(parent);