New Case Contact Table: implement "columns" button

[MikeRose151]

What type(s) of user does this feature affect?

• volunteers

Description

This ticket is a sub-section of a bigger ticket: #6462.
Some foundational work for the bigger ticket has been started in this PR: #6467.

This ticket is to add the "columns" button and its functionality to display/hide columns of the table.

Screenshots of current behavior, if any

How to access the QA site

Login Details:
Link to QA site

Login Emails:

• volunteer1@example.com view site as a volunteer
• supervisor1@example.com view site as a supervisor
• casa_admin1@example.com view site as an admin
• all_casa_admin1@example.com view site as an all casa admin
  • go to /all_casa_admins/sign_in

password for all users: 12345678

Questions? Join Slack!

We highly recommend that you join us in slack #casa channel to ask questions quickly. And discord for office hours (currently Tuesday 5-7pm Pacific), stakeholder news, and upcoming new issues.

[github-actions]

This issue has been open without changes for a long time! What's up?