[FL-1720] BLE GUI refactoring (#678)

* dialog_ex: add clean method, fix documentation
* application: add bt debug and settings application
* bt: add debug application
* bt: add settings application
* bt: rework bt service
* bt debug: fix carrier debug app
* assets: add debug animation to main menu
* bt debug: fix bt packet test
* bt service: rework bt service
* bt: cleanup
* Assets: fix spelling
* Ble: wait for core 2 startup complete before initializing radio stack.
* Accessor: remove dead code, switch port PA6 to PA4, because interrupt line 6 is used by down button.
* FuriHal: assert interrupt line on add_int_callback.
* Bt: update icon on core2 startup complete.

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

applications/bt/bt_service/bt_i.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "bt.h"
+
+#include <furi.h>
+#include <furi-hal.h>
+
+#include <gui/gui.h>
+#include <gui/view_port.h>
+#include <gui/view.h>
+
+#include "../bt_settings.h"
+
+typedef enum {
+    BtMessageTypeUpdateStatusbar,
+} BtMessageType;
+
+typedef struct {
+    BtMessageType type;
+    void* param;
+} BtMessage;
+
+struct Bt {
+    BtSettings bt_settings;
+    osMessageQueueId_t message_queue;
+    osTimerId_t update_status_timer;
+    Gui* gui;
+    ViewPort* statusbar_view_port;
+};