Make sure that nuxt.config.ts is also supported by default

[sobolevn]

I have noticed that nuxt.config.ts is not supported by https://github.com/nuxt/eslint-plugin-nuxt/blob/master/docs/rules/no-cjs-in-config.md

And this is sad. I understand that I can provide config name as an option: but people will forget about it 100% of the time.

We can change the configuration here: https://github.com/nuxt/eslint-plugin-nuxt/blob/master/lib/rules/no-cjs-in-config.js#L28

There might be different rules that do the same thing.

[clarkdo]

Since js and ts are different syntax parser for eslint, so I think we may need an extra plugin or module for ts eslint support.
/cc @kevinmarrec