Allow positioning of Payment Information block

1.0 Problem/Motivation
I am building a webform to take membership application and payment. It's a multi-page form, and the payment page is the last page.

The payment information block appears below the Submit button, which seems strange from a UX perspective.

2.0 Detailed steps to reproduce (embed screenshots)

• Create a webform with a single civicrm contact
• Add a membership with appropriate settings
• Add a contribution with a payment processor
• Test the form

The payment information block will appear below the pagination/submit button.

3.0 Proposed resolution
When adding a contribution, add a custom CiviCRM webform object that can be positioned within the webform.