Add ExtendedCall to PLCObject as a replacement of RemoteExec and reflect it in eRPC interface.
ExtendedCall is a generic remote procedure call that runtime code can register to and that IDE extensions can call.
For example a fieldbus extension can use ExtendedCall to browse the fieldbus devices connected to the runtime.
Overview: IDE and runtime(s)
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..
TODO: take content from https://hg.beremiz.org/beremiz_docs/
PLCopen TC6 based Model-View-Controller Editor
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Toolchain
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Runtimes
--------
Python runtime
^^^^^^^^^^^^^^
C runtime
^^^^^^^^^
Extensions
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Fieldbusses
^^^^^^^^^^^
HMI
^^^
I/Os
^^^^
Integration
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