🛠️ [TASK] : Store preliminary RBAC registration

[mike-mcnulty]

Summary

Store preliminary RBAC registration

Description

Parent #727

When a new registration transaction is submitted by a user through their wallet (see #797), we will send a copy of that submitted transaction to our backend for temporary storage. This will allow us to give provisional access to users until their registrations in confirmed / finalized on mainnet.

For example, we may let a newly registered proposer start editing proposals before they are confirmed on chain, but not allow them to submit for funding until we have on chain confirmation.

These provisional registrations will need to be stored in a database, and accessible / compatible with permissionless auth. When a registration is indexed from mainnet, the temporary record in this database should be discarded. Provisional registrations that are never confirmed should create an alert for the user, informing them that registration was never finalized on chain and they should try again. If further time passes, non confirmed registrations should be discarded.

Each record should include:

• Public signing key (dapp identity)
• Public staking key (on chain identity)
• Wallet submit timestamp