Use CaptureConfig to share state between cores.

Remove awful FIFO_HACK.
TODO: Lots of repeated code...
TODO: Capture thread is signalled too frequently.

firmware/application/event_m0.cpp

@@ -255,6 +255,4 @@ void EventDispatcher::init_message_queues() {
 	new (&shared_memory.application_queue) MessageQueue(
 		shared_memory.application_queue_data, SharedMemory::application_queue_k
 	);
-
-	shared_memory.FIFO_HACK = nullptr;
 }