Consider add `.htmlhintrc.js` support

Is your feature request related to a problem? Please describe.
I have different hint rules based on NODE_ENV, for example development and production.
I don't want to have two .htmlhintrc at the same time.

Describe the solution you'd like
Could you please add .htmlhintrc.js support?

Describe alternatives you've considered

Additional context

[loctran016]

Prettier has similar feature and they're using cosmiconfig.You can see it in prettier's package.json

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.