add manageCamera plantUML

conception/th_manageCamera.txt

@@ -0,0 +1,19 @@
+@startuml
+skinparam monochrome true
+start
+while ()
+	:startCamera?;
+	:bool success = camera.start();
+	if (success) then (false)
+		:msg = new Message(MESSAGE_ANSWER_NACK);
+		:messageToMonitor!msg;	
+	else (true)
+		:shouldSendImage = true;
+		:stopCamera?;
+		:shouldSendImage = false;
+		:camera.Stop();	
+	endif;
+end while;
+stop
+@enduml
+