Add equivalent of object-property-newline for import declaration

object-property-newline

While formatting preferences are very personal, a number of style guides require that object properties be placed on separate lines for better readability. Another argument in favor of this style is that it improves the readability of diffs when a property is changed:

Examples of incorrect code for this rule:

import {createMovieMatcher,matcher} from './../src/movieRecognizer';

Examples of correct code for this rule:

import {
    createMovieMatcher,
    matcher
} from './../src/movieRecognizer';