sparkplug Directory Reference

Files
	sparkplug.cpp
	Sparkplug B payload + topic builder over the Protobuf codec (pure, host-tested).
	sparkplug.h
	Sparkplug B payload + topic codec (PC_ENABLE_SPARKPLUG) - zero-heap builder for the Eclipse Sparkplug B industrial-IoT MQTT payload (a Protobuf message) and its topic namespace. Builds on the Protobuf codec (services/iot/protobuf) and is published with the MQTT client.