[Feature Request]: Add support for nanobot agent

## Feature Request

### Description
Please add support for the **nanobot** agent.

### About nanobot

nanobot is an ultra-lightweight personal AI assistant inspired by OpenClaw.

- **Homepage**: https://github.com/HKUDS/nanobot
- **Configuration directory**: .nanobot/workspace/skills

Thank you for considering this request! 🙏