Migrate CI/CD Variables settings to CRUD container
What does this MR do and why?
Migrate CI/CD Variables settings to CRUD container
- Migrates actions to tertiary buttons
MR acceptance checklist
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Screenshots or screen recordings
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How to set up and validate locally
- Admin: http://gdk.test:3000/admin/application_settings/ci_cd#js-ci-cd-variables
- Project: http://gdk.test:3000/groups/flightjs/-/settings/ci_cd#ci-variables
- Group: http://gdk.test:3000/flightjs/Flight/-/settings/ci_cd
Related to #457239, !156749 (merged)