Asymmetric observations for Actor/Critic

[Paddy369]

I am not sure if this is already something you can do in mlagents, if so, I would appreciate any helps regarding this.

Is your feature request related to a problem? Please describe.
My goal is to use asymmetric observations for the actor and critic. This is for a sim-to-real application, where I have more information available in the simulator and want to use it to speed up training.
Like in this paper: https://www.roboticsproceedings.org/rss14/p08.pdf

Describe the solution you'd like
Asymmetric Actor Critic

Additional context
If its not a feature currently, do you have tips for me how I could implement this myself in your source code?

[github-actions]

This issue is stale because it has been open for 30 days with no activity.