Enhancement in vendor coupon

[Sangi0]

add a function to check the discount type of a coupon in the coupon widget update:

If the discount type of the coupon is “Percent”, then display it next to the discount value as “5%”.
If the discount type of the coupon is in the current currency, for example: 100 dollars from the order amount or from just the discount amount, then display the currency symbol next to it, for example “100$”.
https://multivendorx.com/support-forum/topic/old-vendor-page-vendor-avatar-coupon-style/#post-217663