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/localesettings/LocaleSettings.cpp

@@ -1,9 +1,10 @@
+#include <Tactility/Tactility.h>
+
 #include <Tactility/RecursiveMutex.h>
+#include <Tactility/StringUtils.h>
 #include <Tactility/app/localesettings/TextResources.h>
 #include <Tactility/lvgl/Toolbar.h>
 #include <Tactility/service/loader/Loader.h>
-#include <Tactility/settings/Time.h>
-#include <Tactility/StringUtils.h>
 #include <Tactility/settings/Language.h>
 #include <Tactility/settings/SystemSettings.h>
 
@@ -85,8 +86,6 @@ class LocaleSettingsApp final : public App {
 public:
 
     void onShow(AppContext& app, lv_obj_t* parent) override {
-        auto ui_scale = hal::getConfiguration()->uiScale;
-
         textResources.load();
 
         lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);