added new interface to host and linux osal

ipc/MessageQueueMessage.cpp

@@ -67,3 +67,11 @@ void MessageQueueMessage::print() {
 void MessageQueueMessage::clear() {
 	memset(this->getBuffer(), 0, this->MAX_MESSAGE_SIZE);
 }
+
+size_t MessageQueueMessage::getMessageSize() const {
+	return this->messageSize;
+}
+
+size_t MessageQueueMessage::getMaximumMessageSize() const {
+	return this->MAX_MESSAGE_SIZE;
+}