Feature/istwcms 6137 ocardena webform settings

Summary of changes

Add webform settings on the migration file.

How to test?

1. Checkout this branch
2. run drush cr && drush mr uw_webform && drush mim uw_webform
3. Go /form/webform-237 and verify the draft button is enabled
4. Go /form/webform-238 and verify the preview button is enabled.
5. Check the webform options are migrating well.