Ability to open on the left

[crutchcorn]

I currently have a menu that's on the right-most of the screen. I'd like the ability to tell the submenu to open to the left instead of to the left/on top of.

I can open a PR for this if we can agree on what needs to get done and the API of what this might look like :)

[maebert]

Same issue here, would love to see a PR for this!

[ProfessorX737]

I have included feature in an updated (javascript) version:
mui/material-ui#11723 (comment)