[Proposal] Add relevant project

[pengzhenghao]

Proposal

Hi our project uses minigrid as one of the environment for the human-in-the-loop policy learning! We can add it to this page: https://minigrid.farama.org/content/publications/

Project page: https://metadriverse.github.io/pvp/ Code: https://github.com/metadriverse/pvp

[Learning from Active Human Involvement through Proxy Value Propagation](https://metadriverse.github.io/pvp/)(UCLA, NeurIPS Spotlight 2023)