Allow configure jsonPlugin

[pikax]

Is your feature request related to a problem? Please describe.
Certain .json files I need to handle the export a different way than the one provided by default

// .json
{
  "json": "1"
}
// I need to output to: 
export default JSON.parse(`{"json":"1"}`)

Describe the solution you'd like
Allow passing specific json config to exclude certain files or to exclude the json plugin completely.

Describe alternatives you've considered
Tried use enforce: 'pre' but without success.

Additional context
When you don't need to convert the json into esm import (#1459), a simple JSON.parse(json) is enough and more performant