co⚡e: Sparkplug™ MQTT edge

copied changes from /branches/i-campell example.project [#34]

Split PayloadSimple into PayloadSimpleEncoder and PayloadSimpleDecoder, upped to V0.0.0.9 [#34]
Fixed some bugs with UTF8 encoding section

updated example with simpledecode [#34]

merged branches/i-campbell example.project to trunk [#11]

merging branches/i-campbell .library to trunk at version V0.0.0.8 [#11]

Now uses V0.0.0.8 of Sparkplug B with FB_PayloadSimple [#11]
updated FB_PayloadExample to work with the new MetricPool

MetricPool is now a COL.LinkedList, Added PayloadSimple and FB_SparkplugString, fixed UTF8 encoding [#11]

Fixed bug with FB_PayloadDataset.AddColumn(), which previously returned and outputted an ERROR [#11]
Now it only returns an ERROR

merged trunck changes from r190 to my branches/i-campbell

Payload first steps

cleaned/moved some stuff

merged branches/i-campbell example to trunk [#11]

Added Decode Section to example usage of Payload [#11]

Fixed bug with adding Keys or Columns [#11]

merged branches/i-campbell to trunk [#11]

Fixed bug with calculating array bounds [#11]

Updated unittest project,
Updated MQTT_PubSub Unittests,
Added two new MQTT_PubSub Unittests.

commited mqttsparkplugb.library file to trunk

Payload [#11]
Integration of /branches/i-campbell

InitializeStructure() is now internal to the FBPayload. only FB_Payload.InitializeStructuredPayload() need be called [#28]
- ClaimNextFree* now Initializes the object (and vis a vis, all Add*Blank)
- Checked all FB_Payload*.Set*Blank, and they correctly initialize the object

continued work on FB_EoN & FB_SparkplugB

update before new merge of trunk into this lib

Added Encode Functions for BinaryData, Double, Float and started encoding metrics. [#11]

removed todo about array sizes, made a decode UTF8 string [#11]

Completed Payload.EncodeNextString [#11]