Add a field widget that allows overriding the formatter settings per host entity (as submodule)

Problem/Motivation

Sometimes, for example in paragraphs, you may wish to override the field formatter settings per entity.

I'm unsure if it wouldn't make more sense to implement a generic solution: ✨ [META] Override field formatter settings per entity Active instead of implementing this in each formatter.

So let's keep this as reminder for now.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes