Turn off @typescript-eslint/no-namespace for declare global

[mattrabe]

no-namespace is not useful in files like this which have content like this:

src/types/PrismaJson.ts:

export {}

declare global {
  // eslint-disable-next-line @typescript-eslint/no-namespace
  namespace PrismaJson {
    type MovieData = {
      ...
    }
  }
}

Can we disable that rule just for these types of files?