Backward and Forward Compatibility of Registrations Instances Display on Explorer

[Rashmi-278]

Recently we faced an situation where we have to index and display the registrations made on previous version of EIP4824 Registration Summoner Contract because a major DAO adopted the DAO standard and made the transaction.

We couldn't display the registration instance on our frontend as we didn't index the previous version of contract.

We need to reconsider the design of our frontend and come up with a spec to display registrations made on older and newer version of the EIP4824 Contract

Issues that are part of this:
#158
#186