Bad BT plugin, Submenu locked elements, API updates, etc.

Thanks to WillyJL, ClaraCrazy, and XFW contributors

applications/external/bad_bt/scenes/bad_bt_scene.c

@@ -0,0 +1,30 @@
+#include "bad_bt_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const bad_bt_scene_on_enter_handlers[])(void*) = {
+#include "bad_bt_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const bad_bt_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "bad_bt_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const bad_bt_scene_on_exit_handlers[])(void* context) = {
+#include "bad_bt_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers bad_bt_scene_handlers = {
+    .on_enter_handlers = bad_bt_scene_on_enter_handlers,
+    .on_event_handlers = bad_bt_scene_on_event_handlers,
+    .on_exit_handlers = bad_bt_scene_on_exit_handlers,
+    .scene_num = BadBtSceneNum,
+};