Add loadable module example

modules/echo/main.cpp

@@ -0,0 +1,17 @@
+#include <iostream>
+
+#include "modules/ModuleAPI.h"
+#include "core/inc/Types.h"
+
+extern "C"
+{
+	void process(MBFT::ModuleAPI& api, const MBFT::InboundMessage& message);
+}
+
+void process(MBFT::ModuleAPI& api, const MBFT::InboundMessage& message)
+{
+	std::cout << __FILE__ << ": Processing " << message.text << "\n";
+
+	if (message.text[0] == '!')
+		api.v1_respond(std::string("Hello! Message:\n") + message.text);
+}