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/ioUringAssemblyEngine.h

@@ -24,13 +24,13 @@
 namespace smo {
 namespace stim_buff {
 
-class PcloudStimulusBuffer;
+class PcloudDataProducer;
 
 class IoUringAssemblyEngine
 {
 public:
 	explicit IoUringAssemblyEngine(
-		PcloudStimulusBuffer& parent, size_t nDgramsPerStagingBufferFrame);
+		PcloudDataProducer& parent, size_t nDgramsPerStagingBufferFrame);
 	~IoUringAssemblyEngine() = default;
 
 	bool setup();
@@ -53,7 +53,7 @@ private:
 	bool stop();
 
 private:
-	PcloudStimulusBuffer& parent;
+	PcloudDataProducer& parent;
 
 	// Cached descriptor for reuse across iterations
 	std::shared_ptr<FrameAssemblyDesc> frameAssemblyDesc;