[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>

assets/icons/MainMenu/Debug_14/frame_rate

@@ -0,0 +1 @@
+3