cleanup and improvements

improved driver creation
fixed compile warnings in check.h
hello_world example is now working again with lvgl

main/src/main.c

@@ -8,13 +8,14 @@
 #include "hello_world/hello_world.h"
 
 void app_main(void) {
-    static nb_config_t platform_config = {
+    static nb_config_t config = {
         .display_driver = &board_2432s024_create_display_driver,
         .touch_driver = &board_2432s024_create_touch_driver,
         .apps = {
             &hello_world_app
-        }
+        },
+        .apps_count = 1
     };
 
-    nanobake_start(&platform_config);
+    nanobake_start(&config);
 }