Add payment information fields

[JustShah]

This pull request includes several enhancements and updates related to the handling of trade-in orders, specifically focusing on adding payment information fields and improving parameter handling in the checkout process.

Changes Included:

1. Update Order Decorator to Refactor trade_in_order? Method:

   • Moved the trade_in_order? method to the public section of the class for better accessibility.
   • This refactoring ensures that the method is easily accessible for checking if an order contains trade-in products.

2. Add Controller Decorator for Checkout Params Handling:

   • Added a new decorator for the CheckoutsController to handle permitted parameters based on the checkout state.
   • Included customer metadata in the permitted parameters for the delivery state.
   • This update ensures that the necessary parameters are correctly handled during the checkout process.

3. Add Payment Info Fields Partial for Trade-In Orders:

   • Created a new partial to render payment information fields specifically for trade-in orders.
   • Included fields for payment method, account holder, and payment account.
   • Added a legend for better section identification.
   • Updated labels and select inputs to use localized strings.
   • This enhancement improves the user experience by providing a clear and organized way to input payment information for trade-in orders.

These changes enhance the functionality and user experience for trade-in orders by ensuring proper parameter handling and providing a dedicated section for entering payment information.

[fthobe]

@JustShah Looks much better now, one thing:
Pickup and shipment method radio buttons should be attached together and payment info at the bottom

[fthobe]

Please also consider this comment:

Not now
That hides the fields.

Radio buttons are usually made in following order
All options alphabetically
Negative or form field option at the end.

So the correct way would be:

• Bank Transfer
• Paypal
• Not now

This is how I would do it:

H1 "Trade-In Payment Information"

"Please specify how you want to get paid. Please note that you can communicate your choice later, but it may delay your Trade-In."

• Bank Transfer
• PayPal
• Not now

Not now hides all related formfields.

Also the shipping form field is vertical, we should do the same (do not invent style).

[JustShah]

• form with pickup fields
  
• radio not now selected
  
• radio paypal selected
  
• radio bank transfer selected
  
• no radio selected
  

[JustShah]

• radio selected
  
• no radio selected