Rename PcloudStimulusBuffer=>PcloudDataProducer

This prepares us for the split up of classes. We're going to split
StimulusBuffer into two base classes: StimulusBuffer and
StimulusProducer.

stimBuffApis/livoxGen1/openClCollatingAndMeshingEngine.cpp

@@ -13,7 +13,7 @@
 #include <user/stimulusFrame.h>
 #include "livoxGen1.h"
 #include "openClCollatingAndMeshingEngine.h"
-#include "pcloudStimulusBuffer.h"
+#include "pcloudDataProducer.h"
 #include "openClKernels.h"
 #include "frameAssemblyDesc.h"
 #include "ioUringAssemblyEngine.h"
@@ -82,7 +82,7 @@ static bool validateOpenClVersion(
 }
 
 OpenClCollatingAndMeshingEngine::OpenClCollatingAndMeshingEngine(
-	PcloudStimulusBuffer& parent_)
+	PcloudDataProducer& parent_)
 : parent(parent_),
 platform(nullptr),
 device(nullptr),