Documentation of the "OPC-UA" module significantly updated and translated

The module documentation at last actualized to the current modules state, significant updated and translated. In the documentation added the OPC-UA specific code moving to library libOPC-UA and the library mostly described in structural and it's API. Also there added the table (in an appendix) of OPC-UA specification/services implementation state and the compatibility with different manufacturers of the OPC-UA software.

OPC (OLE for Process Control) — it is the family of protocols and technologies that provide the single interface to control the objects of automation and technological processes. The creating and support of specifications of OPC coordinates an international nonprofit organization OPC Foundation, established in 1994 by the leading manufacturers of industrial automation.

This module implements the interface and protocol support for OPC-UA in the form of client service, and as the OPC-UA server. Client service of OPC-UA is implemented by the same name module of the subsystem "Data...

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