EDIT: This is available at https://apps.odoo.com/apps/modules/browse?search=hypur

Odoo and Hypur have discussed this - there is interest in this from many HEMP and Cannabis Customers, many of whom see the benefits of integration.  There have been no decisions made at this time. The discussion leaned toward Hypur making an Odoo Payment Acquirer, just like Stripe, Authorize.NET, Ingenico, Adyen, Buckaroo, PayU, etc.

You can, with the right skills, do this yourself:

It will probably be closest to Paypal in terms of the User Experience:

How the user configures PayPal:

https://www.odoo.com/documentation/user/13.0/ecommerce/shopper_experience/paypal.html

What the Shopping Cart experience is like:

https://www.odoo.com/shop

Source code for this integration:

https://github.com/odoo/odoo/tree/13.0/addons/payment_paypal

Odoo Technical Documentation:

https://www.odoo.com/documentation/13.0/

FREE Odoo Technical Training:

https://www.odoo.com/slides/technical-training-backend-development-41