[FEATURE]: [Airwallex] Use `connector_request_reference_id` as reference to the connector

[Sakilmostak]

📝 Feature Description

• We transmit our reference id from Hyperswitch to the connector, enabling merchants to subsequently locate the payment within the connector dashboard.
• Presently, there is a lack of uniformity in this process, as some implementations employ payment_id while others utilize attempt_id.
• This inconsistency arises from the fact that payment_id and attempt_id correspond to two distinct entities within our system.

🔨 Possible Implementation

• To mitigate this confusion, we've introduced a new field called connector_request_reference_id in our RouterData.
• This id should replace them as a reference id to the connector for payment request.
• One might need to have exposure to api docs of the connector for which it is being implemented.
• You can check this PR for further reference feat(connector): [Zen] Use connector_request_reference_id as Transaction Id to Retrieve Payments #2052

🔖 Note : All the changes needed should be contained within hyperswitch/crates/router/src/connector/

📦 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?

[soumya-dash3]

Hello @Sakilmostak can I be assigned this issue?

[AkshayaFoiger]

Hey @soumya-dash3, I see that you're already assigned to #2295 and are working on it. For now, we'll leave this issue open to any other interested contributors. You may pick this up once your work on #2295 is completed, and if no other contributors have expressed interest on this. I hope that's fine by you

[sccalabr]

Can I pick this up if the stax transformer (#2317) doesnt need to be updated.

[Sakilmostak]

Sure @sccalabr , Im assigning this issue to you.