feat: @cris Support use prettier config file in root project

[Cris-Xu]

Old version only support prettier config except plugins. If user use plugin like tailwindcss, it would not format tailwindcss class in liquid file. So I did this to use project prettier config fully if user set useProjectPrettierConfig to true.

[Cris-Xu]

I have signed CLA, please re-run the CLA check.

[mgmanzella]

👋 this repo is no longer the source of truth for theme check, if youd still like to make this change please open a new PR in the theme tools repo 🙏 thank you!