[FL-2432], [FL-2487] Rework bt keys load and save (#1139)

* bt keys: rework load and save with saved_struct
* bt: rename bt keys storage functions
* furi_hal_nfc: allow context switch during emilation
* bt settings: rework with saved struct
* infrared: replace file worker with dialogs and storage
* Core, Loader: fix thread allocation tracking, much better, so wow.

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

core/furi/thread.c

@@ -45,6 +45,7 @@ static void furi_thread_body(void* context) {
     thread->ret = thread->callback(thread->context);
 
     if(thread->heap_trace_enabled == true) {
+        osDelay(33);
         thread->heap_size = memmgr_heap_get_thread_memory(thread_id);
         memmgr_heap_disable_thread_trace(thread_id);
     }