[FEATURE]: [Bitpay] Use connector_response_reference_id as reference to merchant

[Sakilmostak]

📝 Feature Description

• Reference id are used to map transactions in the connector’s dashboard.
• Hyperswitch manages several reference ids, such as payment_id, attempt_id, and connector_transaction_id for a single transaction.
• However, merchants may encounter uncertainty when determining which ID to utilize in the connector dashboard to identify the payment.

🔨 Possible Implementation

• When we receive a response from the connector for the payment, we deserialize it and populate the response field in RouterData.
• For the TransactionResponse type, we must fill the connector_response_reference_id with a corresponding reference id for the merchant to identify the transaction.
• One might need to have exposure to api docs of the connector for which it is being implemented to decide what to fill in connector_response_reference_id.
• You can check this PR for further reference feat(connector): [Stripe, Adyen, Checkout] Add reference ID support for retries #1735

🔖 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?

[tarunsinghofficial]

I'm happy to work on this issue, so kindly assign me this issue.
Thanks

[SanchithHegde]

Hey @tarunsinghofficial, since you're already assigned to #2332, we'll leave this open to other contributors for now. You may pick this up once your work on #2332 is completed, and if no other contributors have expressed interest on this. I hope that's fine by you.

[ashh1215]

Hey @SanchithHegde I'd like to work on this issue. Please assign it to me.

[AkshayaFoiger]

Hey @ashh1215, sure! I've assigned this to you.

In case you have any queries, you can ask them on this issue thread, or on our discord server, or on slack whichever you are comfortable with

[VedantKhairnar]

Hey @ashh1215 ,
Let us know if you face any issues. Happy to help! : )

[ashh1215]

Hey @VedantKhairnar
So I was going though the Bitpay documentation to figure out what they're using as the reference id.
Problem is that I've gone through a lot of different areas in the documentation, but haven't been able to find one place where all the variables that are being used in the Hyperswitch code match with those present in the documentation.
I wanted to know whether to proceed with whatever I've found, or whether you could guide me to the correct documentation.

[Sakilmostak]

Hello @ashh1215 you can go through the invoice section of this Bitpay's API reference doc to check how we are interacting with their API.

[VedantKhairnar]

Hey @ashh1215 ,
Just checking in - are you working on it?
Let us know if you need any help.

[ashh1215]

Hey @VedantKhairnar
Yeah, I'm working on it. I should be done soon.