co⚡e: Sparkplug™ MQTT edge

#159 Renamed FB_SparkplugBSimple into FB_SparkplugBxCoderHandler
Fixed references and declarations
Removed FB_PayloadSimpleEncoder
Removed FB_PayloadSimpleDecoder

[#151] v1.4.3.3 Fixed Compiler warnings related to {attribute no-assign}

[133] v1.4.3.2 Added a method for an FB_Metric to initialize itself from a payload
Fixed bugs in FB_Metric.UpdateThisMetricFromPayload, FB_Payload*.GetColumnNext/GetkeyNext
Deleted obsolete function updatemetricfrompayload

Removed FB_SparkplugSimpleDecoder

Branch cleanup
Removed FB_MetricTemplate folder from main branch

[#133] v1.4.3.0 Templates branch now compiles but not yet tested
renamed some methods of IMetric
FB_Metric can now add itself to a Payload
FB_Template can now add itself to a Payload's PayloadMetric

[#133] Templates - Work in progress, does not compile
renamed FB_Metric._NotifyThem to _ValueChanged, as Property Notify is actually more complex

[#133] Templates - Work in progress, does not compile

[#154] V1.4.2.58 FB_Payload, Pool Management: Used FB_PayloadColumns are not reused

There were two pools for columns. reduced this to one and updated all references to it. Problem solved.

Also put the FB_Payload encode/decode methods into folders

v1.4.2.57
Refactored / STWeeped various functions.
STWeeped Global Constants, Variables and ProtoBufId
Moved some interfaces to interfaces folder
Excluded FB_MetricFileTransfer until ticket will be picked up.

v1.4.2.55
Various bugfixes in FB_WStringBuilder

Synced metrictemplate

[#133] Templates can be xBIRTHed

[#133] Added a FB_Template which implements ITemplate
one FB_Template can be registered to an FB_Metric
Several FB_Metrics can be registered to an FB_Template

v1.4.2.53
Edge and Devce now support Alias xCMD, see ticket [#104]
Tested with Ignition
Fixed warnings for implicit typecasting

Stack v1.4.2.50 bumped version number

Stack 1.4.2.20

Expanded Alias publishing mechanism: Aliases are announced during xBIRTH
and refered to while sending xDATA. Aliases mechanism is enabled per default.

Todo Edge:
Nodecommand should accept also aliases

Todo Host:
Alias from birth
Alias xDATA
Alias xCMD

v1.4.2.35
Moved IMessageSource Interface to Edge Library

Expanded IMetric with Alias Property
Version stays 1.4.2.33

v1.4.2.33;
Added Hidden Property Alias to FB_Metric,
Added Alias Property getter and setter

[#112] Read Only Metrics
FB_Metric now has a member Access, which can be ReadOnly or ReadWrite (default)

v1.4.2.31 Enables Metric.Property publishing by Edges and Devices

[#90] Properties
Edge and Device can now xBIRTH Properties and update those properties with xDATA
Properties cannot (yet) be updated by an xCMD
Host does not (yet) recognise Properties

v1.4.2.30

Revised FB_WStringBuilder to support large buffers, i.e. >= 255 Unicode charcters.
see also ticket [#144]

Fixed function ReturnFileName
upped library version to v1.4.2.28