add missing include

Source/VAPlugin/Private/SoundSource/VAAbstractSourceComponent.cpp

@@ -6,11 +6,10 @@
 #include "VAReceiverActor.h"
 #include "VAPlugin.h"
 #include "VAUtils.h"
-
 #include "ImageSourceModel/VAImageSourceModel.h"
-
 #include "SignalSources/VAAudiofileSignalSource.h"
 #include "SignalSources/VAJetEngineSignalSource.h"
+#include "Directivity/VADirectivityManager.h"
 
 #include "Components/SkeletalMeshComponent.h"		// Skeletons
 #include "Kismet/GameplayStatics.h"					// Get Actors of Class