Add ddev ci codeowners command

[lucia-sb]

What does this PR do?

Adds a new ddev command ddev ci codeowners to check repository CODEOWNERS for pull requests, commits, or specific files.

Options:

• --pr <number>: Show codeowners for files changed in a pull request.
• --sha <commit>: Show codeowners for files changed in a commit.
• --files <list>: Show codeowners for a comma-separated list of files.
• --per-file: Output owners per file instead of a combined list.

Motivation

The size quality gates will enforce policies around newly added dependencies. To do this, they must identify which teams introduced those changes in a PR.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Add the qa/skip-qa label if the PR doesn't need to be tested during QA.
• If you need to backport this PR to another branch, you can add the backport/<branch-name> label to the PR and it will automatically open a backport PR once this one is merged

[github-actions]

⚠️ Recommendation: Add qa/skip-qa Label

This PR does not modify any files shipped with the agent.

To help streamline the release process, please consider adding the qa/skip-qa label if these changes do not require QA testing.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.00%. Comparing base (045fe96) to head (2e89f6d).
⚠️ Report is 12 commits behind head on master.

Additional details and impacted files

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.