Model Context Protocol (MCP)

[colltoaction]

MCP (Model Context Protocol) is an open-source standard for connecting AI applications to external systems. https://modelcontextprotocol.io/docs/getting-started/intro

This issue is about using the Widip Shell to generalize the MCP to arbitrary systems. An MCP for the shell to be used from the UIs. Needs an HTTP server or stdio, and it makes sense to choose stdio transport:

from:
  User -> UI -> MCP  -> External System
       -> Bash       -> Local System
to:
  User -> UI -> MCP -> External System
                    -> Shell -> Local system

---

At a later stage, we want the Widip Shell to be able to manage external MCPs without being one

from:
  User -> UI -> MCP -> Shell -> Local system -> External System
to:
  User -> UI ->     -> Shell -> Local system 
                             -> MCP -> External System