Add new DORA Metrics category

Overview

This MR proposes a new category - "DORA Metrics" to groupoptimize.

The goal of this new category is to increase marketing awareness about GitLab DORA offering. This is base on marketing and executive feedback.

Currently, DORA Metrics are incorporated under Value Stream Management category.

Features proposal:

1. DORA dashboard in context of value stream.
2. DORA Overtime charts.
3. Custom DORA reporting.
4. DORA APIs.

Historical related category changes

• Revise Optimize categories
• Absorb the Insights category into Value Stream Management and DevOps Adoption
• Absorb the Code Analytics category into Value Stream Management and DevOps Adoption

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:

• VP of Product @david
• The Product Director relevant to the affected Section(s)
• The Engineering Director relevant to the affected Section(s) @timzallmann
• Director of Product Design @vkarnes

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

• Chief Technology Officer @edjdev
• Vice President of Development @clefelhocz1
• Vice President of Quality @meks
• Vice President of User Experience @clenneville
• The Product Marketing Manager relevant to the stage group(s) - None yet
• Director of Technical Writing @susantacker

After Approvals and Merge

• Create an issue in the triage-ops project to update GitLab Bot automation
• Mention the product group Technical Writer to update the documentation metadata
• Share MR in #product, #development, and relevant #s_, #g_, and #f_ slack channels