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/lvgl/wrappers/switch.cpp

@@ -11,7 +11,7 @@ extern lv_obj_t* __real_lv_switch_create(lv_obj_t* parent);
 lv_obj_t* __wrap_lv_switch_create(lv_obj_t* parent) {
     auto widget = __real_lv_switch_create(parent);
 
-    if (tt::hal::getConfiguration()->uiScale == tt::hal::UiScale::Smallest) {
+    if (tt::hal::getConfiguration()->uiDensity == tt::hal::UiDensity::Compact) {
         lv_obj_set_style_size(widget, 25, 15, LV_STATE_DEFAULT);
     }