co⚡e: Sparkplug™ MQTT edge

Return notImplemented for Payload members which are not yet supported [#34]

[#11]

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]

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

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

Fixed bug with adding Keys or Columns [#11]

Fixed bug with calculating array bounds [#11]

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

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]

branching example project to /branches/i-campbell

branching trunk to /branches/i-campbell

deleting old branch branches/i-campbell

delete local branch example branches/i-campbell

Added FB_Payload Example.

branched mqttsparkplugb-example.project and used CODESYS SVN

branched mqttsparkplugb-example.project and used CODESYS SVN

Added Complete List of setters and getters for FB_Payload and its Children [#11]

Fixed some typos [#11]