[figma] Add more variants to Paper

[Nicktho]

Hey there 👋 , I love the foundations you have set with version 5 of MUI and the figma file!

For the Paper component in figma, we had to add some more variants to match the settings for the component (https://mui.com/components/paper/). I understand adding all the variations might be tedious, but one that was missing that I think would be useful to add to the file itself is the state where paper can have an elevation of 0 and no outline.

[adrianmanea]

Hi Nick, thank you for your suggestion. I'm curious, how do you use the Paper component nowadays? Especially with the Auto Layout feature?

[oliviertassinari]

From what I understand @Nicktho, the elevation is not a prop because it can be customized with the style directly:

[Nicktho]

@adrianmanea, Apologies for getting back to you so late. Ideally we would have used the Paper component w/ Auto Layout, but unfortunately due to the constraints of figma's components (not able to nest generic children in component instances), what we end up having to do is detach instances of Paper from the component and go from there.

I also touched on this here: #30 (comment)

Also @oliviertassinari, you're correct, once detached adding effect styles achieves the result we were after.