Add an example app that uses Model Context Protocol (MCP)

[davemooreuws]

We need an example application that demonstrates how to use the Model Context Protocol (MCP) with Nitric. This example will help developers understand how to integrate MCP in their Nitric applications.

Expected Features:

• A basic application setup using Nitric.
• Implementation of Model Context Protocol (MCP).
• Clear documentation and comments within the code to explain the integration process.

Additional Context: Model Context Protocol (MCP) is a protocol designed to manage and interact with models in a standardized way. More information about MCP can be found in the Model Context Protocol GitHub repository.