[FEATURE REQUEST]PhonePe Payment Gateway Integration

[divyanshluthra]

Is your feature request related to a problem? Please describe.
I am finding it difficult to integrate the phonepe payment gateway as it's very unlike the sample stripe payment gateway given in the docs. Here's a developer link to phonepe payment gateway: https://developer.phonepe.com/v1/reference/pay-api-1

Describe the solution you'd like
I'd like a simple solution for it's integration, wherein I just have to enter the credentials in the admin console.

Describe alternatives you've considered
I have no other alternatives as of now.

Additional context
Add any other context or screenshots about the feature request here.