Adds MCP generator CLI Tool and Integration

[MelbourneDeveloper]

TLDR;

Adds the MCP generator, an example of integration with NucliaDB, and filtering options for specific tags.

Summary

• Adds a CLI tool to generate MCP tool wrappers from OpenAPI specifications.
• Adds tag filtering to reduce the number of generated tools.
• Creates an example NucliaDB MCP server integrated with Claude.
• Configures stdio server transport to support Claude Code.
• Updates the NucliaDB MCP server sample to use the ModelContextProtocol library.
• Updates the NucliaDB MCP server sample to use tag filtering.