[FEATURE]: [Nexi Nets] 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?

[Abhiramjampani]

@AkshayaFoiger
I would be delighted to work on this issue
so kindly assign me this
Thank You : )

[AkshayaFoiger]

Hey @Abhiramjampani , I see that you're already assigned to #2346 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 #2346 is completed, and if no other contributors have expressed interest on this. I hope that's fine by you

[SoundaryaKoutharapu]

Hi @AkshayaFoiger,
I'd like to work on this issue
can you assign this to me.?

[AkshayaFoiger]

Hey @SoundaryaKoutharapu , 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

[SoundaryaKoutharapu]

Hi @AkshayaFoiger sir, can you please point me to the Nexi Nets documentation please?

[AkshayaFoiger]

Hi @SoundaryaKoutharapu ,

Please refer api docs of Nexi Nets here

[VedantKhairnar]

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

[Rutam21]

I have completed the previous issue and raised a PR for it. I would love to work on this now. Please assign it to me. Thank you.

CC: @AkshayaFoiger @VedantKhairnar

[Sakilmostak]

Hello @Rutam21 , thanks for the submission. I have assigned this issue to you👍