Add a command, to add columns to the field schema

Problem/Motivation

There is no command, to add columns to the field schema. See https://git.drupalcode.org/project/drowl_paragraphs/-/blob/4.x/drowl_par... for help.

Steps to reproduce

Proposed resolution

Add a command, to add columns to the field schema

Remaining tasks

User interface changes

API changes

Data model changes