LSP code action: turn (wrong) C-style type definition into a single constructor type

[george-grec]

Now that the compiler can recognize that when the user is creating this type

pub type User {
  name: String
}

they actually need to define it like this

pub type User {
  User(
    name: String,
  )
}

it would make sense to offer a code action on hover to do that automatically.

[lpil]

Good idea! thank you