BCMCPProxy Documentation

[JulianTillmann]

The documentation is a bit vague / short for newbies I would think.

1. It would be nice to have Visual Studio Code support.
2. Setup in BC Environment should be provided
3. It's not clear that "ConfigurationName" is the "Model Context Protocol (MCP) Server Configuration" in BC

also if the configuration is wrong the "400 bad request" is not explained so there is no easy way to find out what's wrong.

I'll try to provide a pull request for the documentation, when I find the time

[JulianTillmann]

PR #334