Update apps for SDK updates (#38)

The updates mainly relate to lvgl-module changes.

Apps/HelloWorld/main/Source/main.c

@@ -1,12 +1,12 @@
 #include <tt_app.h>
-#include <tt_lvgl_toolbar.h>
+#include <lvgl/widgets/toolbar.h>
 
 /**
  * Note: LVGL and Tactility methods need to be exposed manually from TactilityC/Source/tt_init.cpp
  * Only C is supported for now (C++ symbols fail to link)
  */
 static void onShowApp(AppHandle app, void* data, lv_obj_t* parent) {
-    lv_obj_t* toolbar = tt_lvgl_toolbar_create_for_app(parent, app);
+    lv_obj_t* toolbar = lvgl_toolbar_create(parent, "Hello World");
     lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
 
     lv_obj_t* label = lv_label_create(parent);