thoughts on message queuee message

new interface. What if there are MQ messages with different sizes?
-> generic interface

furthermore, maybe command message should be refactored to operate
on a mq message instead of implementing it

datapoollocal/LocalDataPoolManager.cpp

@@ -41,7 +41,7 @@ ReturnValue_t LocalDataPoolManager::initializeHousekeepingPoolEntriesOnce() {
 }
 
 ReturnValue_t LocalDataPoolManager::handleHousekeepingMessage(
-		CommandMessage *message) {
+		MessageQueueMessage *message) {
 	return HasReturnvaluesIF::RETURN_OK;
 }