Rule for indentation

[CraigSiemens]

Would it be possible to have a rule that enforced a consistent amount of indentation?

We try to be consistent with 4 space indenting but occasionally inconsistenies pop up for time to time and they're easy to miss.

[dimaMachina]

Integrate prettier for this https://github.com/B2o5T/graphql-eslint#prettier-rule