Communicate liveness trigger

[adzialocha]

[triaslucia]

This will have 2 levels:

1_ The first notification people will received on their Wallet is referring to this. See: https://github.com/CirclesUBI/circles-myxogastria/issues/396

2_We will work on a series of automated emails: https://docs.google.com/document/d/15K4qPJUkTyi41PnlzvBD5sGjTzX9fZS3Zy_Ra9SgNqU/edit?usp=sharing