wip: Update remark parser 9

[sosukesuzuki]

Description

WORK IN PROGRESS.

#11867 is good. However, we cannot use pure ESM in our source code yet. So we should do update remark without using ESM.

• Update remark-parse to v9 (NOT v10)
• Don't update unified (Need to do in the future, but not in this PR)
• Rewrite our unified plugins to support new plugin system
• Use helpful external plugins

Checklist

• I’ve added tests to confirm my change works.
• (If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory).
• (If the change is user-facing) I’ve added my changes to changelog_unreleased/*/XXXX.md file following changelog_unreleased/TEMPLATE.md.
• I’ve read the contributing guidelines.

✨Try the playground for this PR✨

[sosukesuzuki]

current test status (under ./tests/format/markdown):

Test Suites: 20 failed, 22 passed, 42 total
Tests:       159 failed, 426 passed, 585 total
Snapshots:   159 failed, 426 passed, 585 total

[fisker]

Great work.

Note: The tests in tests/format/markdown/auto-link/jsfmt.spec.js not all valid.

[sosukesuzuki]

It is hard to update unified and remark-parse without breaking changes. So close this. I reopen the PR that has a same purpose of this PR based on next branch.