Implemented Prettier for GraphQL formatting

[ariasmn]

Implementing a specific library for GraphQL formatting was needed to close some issues.
This should close #3242 , which links to three other issues related to GraphQL formatting.

[dimitropoulos]

fantastic!

I tested with

type Query {
  me: User
}

# comment that shouldn't go away
type User {
  id: ID
  name: String
}

mutation UpdateBasicInfo($id: ID!, $firstName: String, $middleName: String, $lastName: String, $gender: string, $birthDate: DateTime) {
  updateEmployee(employee: {id: $id, firstName: $firstName, middleName: $middleName, lastName: $lastName, gender: $gender, birthDate: $birthDate }) {
    id
    firstName
    middleName
    lastName
    gender
    birthDate
  }
}

BEFORE	AFTER

So, comments are not removed, indent is respected (including tabs or not), and long lines wrap like you'd expect.

This is great. Thanks!!

[wdawson]

Thanks for the PR @ariasmn ! Looking forward to getting this out to everyone 🚀

[ariasmn]

@dimitropoulos @wdawson Thank you so much for the feedback and the fantastic job you do! Glad that I could help 😄

[gatzjames]

🚀 LGTM! Works great!