feat(eslint-config): add "@" alias to order rule

Author: dangreen

packages/eslint-config/src/subconfigs/es6.js

@@ -59,6 +59,11 @@ export default [
               pattern: '#*/**',
               group: 'external',
               position: 'after'
+            },
+            {
+              pattern: '@/**',
+              group: 'external',
+              position: 'after'
             }
           ],
           'newlines-between': 'never'