Add field to field configuration page

Hi all,

I’m trying to figure out how to add a field to the content type field configuration page – e.g. /admin/structure/types/manage/typename/fields/node.content_type_machine_name.field_machine_name

Essentially I want to add another checkbox next to the “required” checkbox on all existing field types (on the same page as help text, required, default value) – I don’t want to add any new field types with this and would like to keep this as robust as possible. The closest thing I came across is DrupalfieldFieldFieldConfigBase. I can’t find any documentation anywhere on adding fields to this page.

Thanks in advance!

Drupal version: 


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