[Feature Request] Google Research Football Integration

[Benjamin-eecs]

Motivation

A typical large-scale single/multi-agent RL environment in need of speedup

Resource

https://github.com/google-research/football

Road Map

• [ ] add game_engine into third_party
• [ ] load assets
• [ ] design class interface
• [ ] align with gfootball

Checklist

• [x] I have checked that there is no similar issue in the repo (required)

cc @kfq2002