Add custom icon fonts to lvgl-module (#499)

* **New Features**
  * Added Material Design symbol fonts and LVGL font aliases for launcher, status bar, and shared UI icons.

* **Style**
  * Migrated app icons across the UI to the new symbol font system.
  * Updated launcher button sizing, font styling, recoloring and icon text color for consistency.
  * Default text/icon font macros set for consistent sizing across the UI.

* **Documentation**
  * Updated third‑party notices to include Material Design Icons links.

Tactility/Source/app/notes/Notes.cpp

@@ -3,12 +3,12 @@
 #include <Tactility/file/FileLock.h>
 #include <Tactility/lvgl/Toolbar.h>
 #include <Tactility/lvgl/LvglSync.h>
-#include <Tactility/service/loader/Loader.h>
 #include <Tactility/Assets.h>
 
 #include <Tactility/file/File.h>
 
 #include <lvgl.h>
+#include <tactility/lvgl_symbols_shared.h>
 
 namespace tt::app::notes {
 
@@ -209,7 +209,7 @@ class NotesApp final : public App {
 extern const AppManifest manifest = {
     .appId = "Notes",
     .appName = "Notes",
-    .appIcon = TT_ASSETS_APP_ICON_NOTES,
+    .appIcon = LVGL_SYMBOL_EDIT_NOTE,
     .createApp = create<NotesApp>
 };