feat(ci): autofix in CI instead of requiring contributors to push a new commit

[CommanderStorm]

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📝 Summary of changes done and why they are done

Instead of requiring me or contributors to fix pure formatting issues, we should just do this for them.

@louislam this again requires admin level priviliges to enable.
-> please install this here https://autofix.ci/

to see it in action in CommanderStorm/mdbook-mermaid-ssr#44

• A contributor creates a change with a formatting issue (in this case updating the version in one, but not the other place)
• The action fixes this
• A commit is pushed

All of this is much simpler to get secure than the alternatives (where I would not know if i can entirely make that happen) that I could build.
In terms of actual alternatives, I only know of http://pre-commit.ci/ and I like this more, since it is more out of the way.

[Copilot]

Pull request overview

This PR introduces an automated code formatting workflow using autofix.ci to automatically fix linting issues in pull requests, eliminating the need for contributors to manually push formatting fixes.

Key changes:

• Adds a new GitHub Actions workflow that runs ESLint and Stylelint auto-fixers on pushes and pull requests
• Integrates with autofix.ci to automatically commit formatting fixes back to the branch

[louislam]

-> please install this here https://autofix.ci/

Should be just installed.