[Structure] Introduce Protocol Architecture

[OpcUa Support]

It provides two communication nodes, independent of the actual communication protocol, using TCP and HTTP for client-server and pub/sub, the bottom layer of Opc Ua is a complete IP space, variable structure and warning mode. The second layer provides TCP and HTTP settings for the protocol layer. The third layer is the use of programming languages namely, Python, Java, .NET, and Ansi/C++ languages, and the fourth layer is the API connection layer. Three encoding methods are used: UA Binary, JSON, and XML are connected in accordance with the opc.tcp:// method.