Docs: documenting OpenOpcServer inside of multi-platform installation image

[jamesbraza]

In the Multi platform installation docs section that renders doc/assets/LinuxSetup.png, it shows openopc2 Service running on the Windows machine.

In the image, can you document which service this is of OpenOpcService, OpenOpcCli, OpenOpcServer (from scripts/build_executables.ps1)? I believe it's OpenOpcServer, but I want to be sure.

Also, can you include some information on what the proxy entity is on the Linux machine? Thank you in advance!

[jamesbraza]

Also, in this part of the README.md:

On your Linux machine

pip install openopc2

python

from openopc2.da_client import OpcDaClient

Can we document what openopc2.Proxy means? It's not mentioned in the Python imports detailed in the README.

[delicacyyy]

You can check my code. It's work!