Please enable Copilot reviews

I would like to propose enabling GitHub Copilot’s PR review capabilities for the kubernetes-sigs/controller-tools repository on an experimental basis.

The goal is to evaluate whether AI-assisted review can:

- Improve review turnaround time
- Help identify missing test coverage or edge cases
- Reduce reviewer load for routine feedback

**Motivation**

There has been ongoing discussion in SIG ContribEx about adopting AI-assisted code review tools (e.g. kubespray issue https://github.com/kubernetes-sigs/kubespray/issues/12573 and related discussions).

Additionally, the proposed policy in:
https://github.com/kubernetes/community/pull/8910

suggests a per-repo, opt-in model for evaluating AI review tools.

This request aims to align with that direction by starting with a small, controlled experiment in a single repo.

**Related discussions:**

- https://github.com/kubernetes-sigs/kubespray/issues/12573
- https://github.com/kubernetes/org/issues/5930 (CodeRabbit request)
- https://github.com/kubernetes/community/pull/8910 (AI review policy draft)

No repository files, tests, or entry points are named. Start by reviewing the proposed AI review policy and the linked related discussions, then determine the repository approval and configuration steps; done means a documented decision on whether to run the proposed controlled Copilot review experiment.

Written by the indexing model from the issue text.