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/systeminfo/SystemInfo.cpp

@@ -10,6 +10,7 @@
 #include <algorithm>
 #include <format>
 #include <lvgl.h>
+#include <tactility/lvgl_symbols_shared.h>
 #include <utility>
 #include <cstring>
 
@@ -701,7 +702,7 @@ class SystemInfoApp final : public App {
 extern const AppManifest manifest = {
     .appId = "SystemInfo",
     .appName = "System Info",
-    .appIcon = TT_ASSETS_APP_ICON_SYSTEM_INFO,
+    .appIcon = LVGL_SYMBOL_AREA_CHART,
     .appCategory = Category::System,
     .createApp = create<SystemInfoApp>
 };