chore: start migration, yarn v4, changesets, workflows

[JounQin]

close #8
close #12

[changeset-bot]

🦋 Changeset detected

Latest commit: 24e0fb3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
eslint-plugin-jsx-a11y-x	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

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[Copilot]

Pull Request Overview

This PR initiates a migration effort including an upgrade to Yarn v4, integration of changesets, and a rework of GitHub workflows.

• Update licensing and contributing guidelines
• Reformat the changelog for consistency
• Introduce new configurations and workflows for release, CI, and code formatting

Reviewed Changes

Copilot reviewed 282 out of 282 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
LICENSE	Updated copyright year range and added a new contributor line
CONTRIBUTING.md	Revised contribution guidelines and updated links
CHANGELOG.md	Reformatted markdown headers for changelog entries
.yarnrc.yml, .prettierrc.mjs, etc.	Introduced new configuration files for Yarn v4 and Prettier
.github/workflows/*	Overhauled workflows with new release, CI, autofix, and removal of legacy files
.changeset/*, .c8rc.json, others	Added new changeset configuration and updated test coverage settings

Comments suppressed due to low confidence (2)

.github/workflows/publish.yml:1

• The removal of the publish.yml workflow suggests a migration towards the changesets release process; please confirm that all publishing steps are properly covered in the new release workflow and that related documentation is updated accordingly.

diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml

CHANGELOG.md:177

• Ensure that the updated markdown header formatting in the changelog is compatible with any automation tools and that it remains consistent with previous entries to prevent parsing issues.

# 6.6.1 / 2022-07-21

[pkg-pr-new]

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npm i https://pkg.pr.new/eslint-plugin-jsx-a11y-x@13

commit: 24e0fb3

[43081j]

do we actually use this anywhere?

[JounQin]

I was going to use it for lint script, but for some reason, eslint.config -> .eslintrc temporarily, I reverted the script unexpectedly.