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/i2cscanner/I2cScanner.cpp

@@ -11,11 +11,12 @@
 #include <Tactility/Preferences.h>
 #include <Tactility/RecursiveMutex.h>
 #include <Tactility/service/loader/Loader.h>
-#include <Tactility/Tactility.h>
 #include <Tactility/Timer.h>
 
 #include <format>
 
+#include <tactility/lvgl_symbols_shared.h>
+
 namespace tt::app::i2cscanner {
 
 extern const AppManifest manifest;
@@ -410,7 +411,7 @@ void I2cScannerApp::onScanTimerFinished() {
 extern const AppManifest manifest = {
     .appId = "I2cScanner",
     .appName = "I2C Scanner",
-    .appIcon = TT_ASSETS_APP_ICON_I2C_SETTINGS,
+    .appIcon = LVGL_SYMBOL_SEARCH,
     .appCategory = Category::System,
     .createApp = create<I2cScannerApp>
 };