[Onchain tracking] PoC

[DaniSomoza]

Create a PoC testing the changes for onchain data tracking. We will test the code for both final ways of adding the identifier.:

• Append the identifier hex encoded (keccak256) at the end of the Data
• Use the refundReceiver field to set the hex encoded identifier.

We are still waiting for feedback from the Protocol team to understand if the first approach may have security concerns. This needs to be confirmed after Devcon.

Coordinate with analytics team how they plan to gather the data