add notte-browser to computers

[andreakiro]

#45 Adds a notte browser to the available computers in openai/cua
—remote headless browser with full options (Proxies, stealth, observable, etc)

[ibigio]

tl;dr please adhere to new computer structure and contributing process

Hi! Thanks for your contribution – we'd love to get it reviewed and merged. To better support custom CUA computers we've created a contrib directory to co-locate community contributions and automatically run basic smoke tests.

Please make sure you complete the three main steps:

1. Move computers/contrib and update configs
2. Pass tests & do manual testing
3. Submit PR with required information

These are explained in detail in the contributing section of the README.

Thanks again!