chore: add prow OWNERS files to control the approvals for critical configuration files (#8218)

[ti-chi-bot]

This is an automated cherry-pick of #8218

What problem does this PR solve?

Issue Number: Close #8167

What is changed and how does it work?

Check List

Tests

• No code

Code changes

• None

Side effects

• None

Related changes

• [ ] Need to cherry-pick to the release branch: release-8.1, release-7.5, release-7.1, release-6.5, release-6.1

Release note

None.

[ti-chi-bot[bot]]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• HuSharp
• lhy1024

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment. After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review. Reviewer can cancel approval by submitting a request changes review.

[ti-chi-bot[bot]]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available [here](https://prow.tidb.net/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HuSharp, lhy1024

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/tikv/pd/blob/release-7.5/OWNERS)~~ [HuSharp,lhy1024] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment