introduce the aircraft scheduler to receive new messages from the backend

threading-concepts are used to avoid unnecessary main thread action

src/CMakeLists.txt

@@ -32,6 +32,7 @@ SET(SOURCE_FILES
 
 SET(SOURCE_COM_FILES
     com/AircraftReporter.cpp
+    com/AircraftScheduler.cpp
     com/ZmqContext.cpp
     com/ZmqContext.h
 )
@@ -50,6 +51,7 @@ SET(SOURCE_FILES_RES
 
 SET(INCLUDE_COM_FILES
     ${CMAKE_SOURCE_DIR}/include/aman/com/AircraftReporter.h
+    ${CMAKE_SOURCE_DIR}/include/aman/com/AircraftScheduler.h
 )
 
 SET(INCLUDE_CONFIG_FILES