chore: add CODEOWNERS (topkoa, byrongamatos)

[topkoa]

Adds a root .github/CODEOWNERS naming @topkoa and @byrongamatos as default owners for the whole repo.

Pairs with the branch protection being set up on main: with Require review from Code Owners enabled, every PR here needs a sign-off from one of the two owners before merge — fitting for a published contract that plugin authors build against.

Note: CODEOWNERS only bites once the branch-protection rule has Require review from Code Owners ticked.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Added repository ownership rules to clarify who reviews changes across the project.
  • Established required ownership review for changes merged into the main development branch.
  • Documented maintainership of the published plugin specification.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 7ba57ffa-9d4f-4e42-b9cd-3648e4a380b5

📥 Commits

Reviewing files that changed from the base of the PR and between 5c9d916 and 0f87ee7.

📒 Files selected for processing (1)

• .github/CODEOWNERS

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📝 Walkthrough

Walkthrough

Adds a repository-wide CODEOWNERS file assigning all paths to two maintainers and documenting required review for merges to main.

Changes

Code ownership

Layer / File(s)	Summary
Repository ownership rule .github/CODEOWNERS	Assigns all repository paths to the designated maintainers and documents branch-protection enforcement and plugin specification stewardship.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding a CODEOWNERS file for the repository.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/add-codeowners

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