Add "check all" checkbox to bulk delete

What does this MR do and why?

Implements #370241 (closed). This MR depends on !93473 (merged).

This change adds a checkbox that allows users to check all runners on the current page.

☝ Read https://gitlab.com/gitlab-org/gitlab/-/issues/370241#scenario-requirements for more details.

Screenshots or screen recordings

detail	behavior

How to set up and validate locally

1. Enable the bulk delete feature

   Feature.enable(:admin_runners_bulk_delete)

2. Logged in as Admin
3. Visit the admin -> runners page http://gdk.test:3000/admin/runners
4. Click the checkbox at the top, to select all
5. Click on delete selected

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #339525 (closed)