[BUG] FIx routing field validation in payments request

[Sarthak1799]

Feature Description

As of now, routing field in the payments request wasn't being validated, have to add validations for the same

Possible Implementation

Jus have to add validations in payments create, update and confirm

Have you spent some time checking if this feature request has been raised before?

• I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!