Ebs integration in ojs

We are in the process of launching our Journal (The Indian Journal of Social work ) online using Open Journal System.

We require support to integrate the payment gateway system used by our Institute (https://www.ebs.in/IPS/ 4) We would like to know if PKP would be willing to write a custom payment plugin for our OJS (version 3.1.1-2 ) instance, if yes what would be the steps to create custom plugin for ebs payment gateway.

we have to show 2 payment option ebs and paypal for user in ojs 3.1.1-2 version.
we require to integrate the payment system with a local and international provider.