Add Claude desktop quick start and update Cargo.toml of examples/servers, examples/clients

[Rayato159]

Add quick-start documentation for using MCP counter example with Claude Desktop.
Improves onboarding for developers testing custom MCP servers with Claude.

Motivation and Context

Currently, there's no example in the documentation on how to configure and run a custom MCP Rust server with Claude Desktop.
This PR adds a clear step-by-step guide to help users build, configure, and interact with the counter example via Claude Desktop.

How Has This Been Tested?

Currently, there's no example in the documentation on how to configure and run a custom MCP Rust server with Claude Desktop.
This PR adds a clear step-by-step guide to help users build, configure, and interact with the counter example via Claude Desktop.

Breaking Changes

Tested locally on:

• Windows 11
• Claude Desktop v0.9.1
• Verified that counter.say_hello, counter.increment, counter.get_value, and counter.sum work via Claude chat UI

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

Updated the config in Cargo.toml of examples/servers and examples/clients

[Rayato159]

This is my screenshot while testing.

[jokemanfire]

That's well , Thanks!

[Rayato159]

That's well , Thanks!

I’ve updated the commit messages to meet the commit lint requirements.
Please take a look again when you get a chance. Thanks a lot!