Missing APIs for Vouchers, Offers, and Coupons

[harshalkumar-ishi]

Hi team,

While integrating django-oscar-api, I noticed some functionality is missing in the current release. It would be helpful if the following APIs could be added:

• Remove voucher from basket
• CRUD for Offers (create, retrieve, update, partial update, delete)
• CRUD for Coupons

These endpoints are important for applications that need full promotional feature management through the API.

Please let me know if this is planned or open for contributions — I’d be happy to help.

Thanks!