Add support for pathmind simulations and auto-norm

[slinlee]

@brettskymind since pathmind simulations have reward terms built in, it makes sense to enable auto balancing/auto-norm.

part of adding support for pathmind simulations in the webapp PathmindAI/pathmind-webapp#2934
cc @ejunprung

@slinlee Btw, do you want me to build this support on the newest auto-balancing/auto-norm branch: bg_nb or create a new branch from current dev?

[slinlee]

@brettskymind how much do the changes overlap?

Already made the changes. They don’t really overlap, so I’ll go with Dev

[slinlee]

perfecto

enabled in this #437
with support by this PathmindAI/pathmind-api#15

[slinlee]

We'll keep this open until the PR are merged