Give Processors a run() function.

So main() can call it, start a Processor linked in to the baseband binary.

firmware/baseband/proc_capture.cpp

@@ -23,6 +23,8 @@
 
 #include "dsp_fir_taps.hpp"
 
+#include "event_m4.hpp"
+
 #include "utility.hpp"
 
 CaptureProcessor::CaptureProcessor() {
@@ -90,3 +92,8 @@ void CaptureProcessor::capture_config(const CaptureConfigMessage& message) {
 		stream.reset();
 	}
 }
+
+void run() {
+	EventDispatcher event_dispatcher { std::make_unique<CaptureProcessor>() };
+	event_dispatcher.run();
+}