[FL-2700] Fix IR hangup with short signals (#1535)

* Do not use infrared worker callback for notifications
* Remove tx callback
* Port Infrared notifications to hardware blinker
* Move all blink message definitions to notification_messages.h
* Fix potential hangup after leaving debug scene

applications/subghz/subghz.c

@@ -5,18 +5,6 @@
 #include "subghz_i.h"
 #include <lib/toolbox/path.h>
 
-static const NotificationSequence sequence_blink_start_magenta = {
-    &message_blink_start_10,
-    &message_blink_set_color_magenta,
-    &message_do_not_reset,
-    NULL,
-};
-
-static const NotificationSequence sequence_blink_stop = {
-    &message_blink_stop,
-    NULL,
-};
-
 bool subghz_custom_event_callback(void* context, uint32_t event) {
     furi_assert(context);
     SubGhz* subghz = context;