[New] add sort-by-length option to order rule

[azat-io]

Add option to import/order rule for sorting imports by length.

For example:

// { groups: ['external', 'index'], 'sort-by-length': { order: 'desc' } }

import { foo , bar } from 'module-name/path/to/specific/un-exported/file';
import { export1 as alias } from 'module-name-1';
import { export1, export2 } from 'module-name-2';
import defaultExport from 'module-name-3';
import { export3 } from 'module-4';
import * as name from 'module-5';

import index from './';
import './module';

[coveralls]

Coverage increased (+14.4%) to 83.938% when pulling a313438 on azat-io:order-by-length into e871a9a on benmosher:master.

[coveralls]

Coverage increased (+14.4%) to 83.938% when pulling a313438 on azat-io:order-by-length into e871a9a on benmosher:master.

[coveralls]

Coverage increased (+14.6%) to 84.144% when pulling 6289b54 on azat-io:order-by-length into e871a9a on benmosher:master.

[ai]

My favorite way to sort imports

[ljharb]

Is the intention here to sort by length of the module specifier only, or by the length of the whole line? if the latter, what happens to multiline named imports?