Rename Code Review categories

Why is this change being made?

As part of Product#5179 (closed) this resolves the issue with groupcode review where the group and category share the same name. This:

1. Renames the category Code Review to Code Review Workflow
2. Creates a new category GitLab CLI
3. Removes the category Editor Extension

Approve Category Changes

• - Group Product Manager (@sarahwaldner)
• - Director of Product Section (@ogolowinski)
• - Director of Product Design (@vkarnes)
• - Director of Engineering (@dsatcher)
• - VP of Product (@david)

Informed of Category Changes

• @akramer (Acting CTO)
• @clefelhocz1 (VP of Development)
• @tpazitny (Director of Quality Engineering)
• @gl-quality/eng-prod (Engineering Productivity)
• @heather (Product Marketing)
• @dianalogan (Technical Writing)

After Approvals and Merge

• Create an issue in the triage-ops project to update GitLab Bot automation using the template for Category change or using the template for Stage or Group change
  • Issue for updating code review to code review workflow
  • Issue for renaming editor extensions to gitlab cli
• Mention the product group Technical Writer to update the documentation metadata
• Share MR in #product, #development, and relevant #s_, #g_, and #f_ slack channels