beremiz

WIP: Add skeleton for MQTT extension based on part of OPC-UA extension.

2024-06-12, Edouard Tisserant
76295adcf940
WIP: Add skeleton for MQTT extension based on part of OPC-UA extension.

For now generated code makes no sense but persistently-configurable-C-generating-extension infrastructure is there.
PLC variables and local variables
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PLC variables start with ``/``
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Local Page variables start with ``.``
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Local HMI variables
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