In-app notifications for project owners when project becomes verified & unverified

[divine-comedian]

In this new feature verification and unverification can be triggered based on on-chain attestations being registered by our BE.

From this new flow we should ensure project owners are notified in-app when their project becomes verified and similarly when their project falls under the required threshold and becomes unverified.

The notification should let project owners know that this status change was triggered by vouches received on their project

Given that this action is triggered by user behaviour we should consider how we can prevent notifications from being sent too rapidly to project owners.