Add field category

Problem/Motivation

The field should be grouped into a category. First check, if a good one already exists (references or something like that?) otherwise create a group:
https://www.drupal.org/node/3364271 →

Since Drupal 10.2 fields add UI improved a lot, that's what it is used for :)

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes