[RFC] Allow customization of the overlay's position relative to anchor element in CSUI

[shinobu-uwu]

How do you envision this feature/change to look/work like?

Instead of always rendering the component in the top left corner of the anchor it would be nice to be able to select in which corner the component will be rendered.

What is the purpose of this change/feature? Why?

This allows for better customization and some applications, like password managers that have inline autofill (check image below for example), need this type of customization

It's not that hard to implement at application level, but would be nice if the framework provided this

(OPTIONAL) Example implementations

No response

(OPTIONAL) Contribution

• I would like to contribute to this RFC via a PR

Verify canary release

• I verified that the issue exists in plasmo canary release

Code of Conduct

• I agree to follow this project's Code of Conduct
• I checked the current issues for duplicate problems.