[FEATURE] Include client source and client version to identify where a payment attempt originated from

[vsrivatsa-edinburgh]

Feature Description

Include client source and client version in the payment_attempt schema to identify where a payment attempt originated from.

Possible Implementation

Collect this information from the PaymentsConfirm request headers

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

• [X] I checked and didn't find a similar issue

Have you read the Contributing Guidelines?

• [X] I have read the Contributing Guidelines

Are you willing to submit a PR?

Yes, I am willing to submit a PR!