Custom Rule: Enforce spacing between import sections

[ismail-syed]

Suggested by @utkarshsaxenashopify

import * as React from 'react';

import {FooModule} from 'FooLand;
import {Bar, Baz} from 'BarLand;

import relativeModule from '../ReativeModule';
import * as relativeModule2 from './RelativeModule2;
import moreRelativeModules from './moreRelativeModules';

Import structure order:

• Enforce React first
  • Empty line
• Module Imports
  • Empty line
• Absolute Imports
  • Empty line
• Relative (Parent/Ancestors: ../someParent) Imports
• Relative (Sibling: ../someSibiling) Imports
  • Empty line

[ismail-syed]

I don't we'll need an empty line between React and the module imports. Too many empty lines at that point, IMO. However, we can enforce react being the first import. If we'd like to.