Merge develop into main (#339)

- Update ILI9341 driver to v2.0.1
- Lots of code cleanup for apps
- Refactor app "type" into "category" and added flags to the manifest (for show/hide statusbar and for hidden apps)
- Rename some ElfApp-related functionality and improved the way the static data was managed
- Rename "filebrowser" to "files"
- Added cstring functions to tt_init.cpp
- Minor fix in Boot app
- Updated external apps for SDK changes

TactilityC/Include/tt_app_manifest.h

@@ -28,10 +28,6 @@ typedef void (*AppOnHide)(AppHandle app, void* _Nullable data);
 typedef void (*AppOnResult)(AppHandle app, void* _Nullable data, AppLaunchId launchId, AppResult result, BundleHandle resultData);
 
 typedef struct {
-    /** The application's human-readable name */
-    const char* name;
-    /** The application icon (you can use LV_SYMBOL_* too) */
-    const char* _Nullable icon;
     /** The application can allocate data to re-use later (e.g. struct with state) */
     AppCreateData _Nullable createData;
     /** If createData is specified, this one must be specified too */