Feature: MCP (Model Context Protocol) support

[yurhasko]

After Anthropic open-sourced MCP, Claude Desktop is currently a default client for most users, but it has a huge potential of becoming a widely spread standard which will be used by other LLM clients.

Numerous interesting integrations via MCP are already present, for example:

• Neon built their MCP server for interacting with their DB platform. Their blog post about a CLI MCP client
• Smithery (MCP registry) already has huge amount of integrations (and even more huge potential)

Would be really nice to have MCP support in ChatCraft to be able to interact with the local filesystem and tools via LLM, (especially to have it implemented in a LLM-vendor-agnostic way)