add event system and use it to propagate to print traces

src/lib/eventsystem/event/CMakeLists.txt

@@ -0,0 +1,17 @@
+SET(HDRS
+	${HDRS}
+	${CMAKE_CURRENT_SOURCE_DIR}/TracePrintRequestedEvent.h
+	PARENT_SCOPE
+)
+
+SET(SRCS
+	${SRCS}
+	${CMAKE_CURRENT_SOURCE_DIR}/TracePrintRequestedEvent.cpp
+	PARENT_SCOPE
+)
+
+set(LIB_INCLUDE_PATH
+	${LIB_INCLUDE_PATH}
+	${CMAKE_CURRENT_SOURCE_DIR}
+	PARENT_SCOPE
+)

src/lib/eventsystem/event/TracePrintRequestedEvent.cpp

@@ -0,0 +1 @@
+#include "TracePrintRequestedEvent.h"

src/lib/eventsystem/event/TracePrintRequestedEvent.h

@@ -0,0 +1,10 @@
+#ifndef TRACE_PRINT_REQUESTED_EVENT_H
+#define TRACE_PRINT_REQUESTED_EVENT_H
+
+#include "Event.h"
+
+class TracePrintRequestedEvent : public Event
+{
+};
+
+#endif   // TRACE_PRINT_REQUESTED_EVENT_H