Add support for TS config files (#16828)
* feat: prettier.config.ts
* revert
* feat: add flag
* fix: remove experimental warning
* Revert changes
* Add tests
* Update docs
* Only test on Node.js v22
* Add changelog
* Update docs
* Update examples
* Fix changelog
* Fix command
* Name `loadJs` back
* Fix
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Co-authored-by: fisker <lionkay@gmail.com>
