Add ls-url and list-url commands (#89)

* Add ls-url and list-url commands

* Fix ordering

Author: rogermparent

packages/gatsby-theme-iterative/config/prismjs/dvc-commands.js

@@ -40,8 +40,10 @@ module.exports = [
   'metrics',
   'params diff',
   'params',
-  'ls',
+  'list-url',
+  'ls-url',
   'list',
+  'ls',
   'install',
   'init',
   'import-url',