Tweak - Coupon into module

[riteelama]

All Submissions:

• Have you followed the Everest Forms Contributing guideline?
• Does your code follow the WordPress' coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

This PR introduces a new feature to the Coupon addon that allows users to generate coupon codes in bulk. Previously, the addon only supported single coupon code generation. This enhancement will streamline the coupon creation process, making it easier for users to generate multiple codes efficiently.

PR DEPENDENCY

Closes # .

How to test the changes in this Pull Request:

1. Go to Everest Forms Dashboard > Features > Enable Coupons Addons.
2. Now go to Coupons > Create New Coupon
3. Pop up will appear to choose the coupon code generation type either Single Coupon or Bulk Coupon Code.
4. To create the single coupon code refer to this docs.
5. To create the bulk coupon code follow following steps:
   -> Enter the Coupon Number, prefix, discount type, Start and End date, Select the Form for coupons to be applied.
6. Now Check whether the newly created or generated coupon code is working accordingly or not.

Types of changes:

• Bug fix (non-breaking change which fixes an issue)
• Enhancement (modification of the currently available functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you successfully ran tests with your changes locally?
• Have you updated the documentation accordingly?

Changelog entry

Tweak - Coupon into module