Realign deployment categories

This MR implements the proposal outlined in https://gitlab.com/gitlab-com/Product/-/issues/2572

1. Release Evidence is moving from ~"group::package" back to grouprelease. A Release can be an input to a pipeline for a deployment pipeline. Furthermore, this is a category closely related to Release Orchestration that should belong in Release.
2. Review Apps is moving from grouprelease to grouptesting. While a Review App is a mapping of a branch with an environment, its main purpose is to enable testing of an application that aligns with the mission of grouptesting. In addition, Review Apps and Visual Reviews are closely related.

Approvals

Merge requests with changes to stages and groups and significant changes to categories need to be created, approved, and/or merged by each of the below:

• Chief Product Officer @sfwgitlab
• VP of Product @adawar
• The Product Director relevant to the stage group(s) @kencjohnston
• The Engineering Director relevant to the stage group(s) @sgoldstein
• Director of Product Design @vkarnes
• CEO

The following people need to be on the merge request so they stay informed:

• Chief Technology Officer @edjdev
• Vice President of Development @clefelhocz1
• Director of Quality @meks
• Vice President of User Experience @clenneville
• The Product Marketing Manager relevant to the stage group(s)