Save safes created from TzSafe dApp in database

[aguillon]

From Slack:

In case Umami reuses your smart contracts (not the case at the moment), we probably want to register the list of safes originated from TzSafe somewhere (e.g. SQL) for later potential use, e.g. airdrops. We wouldn't want to accidentally airdrop a safe that has been created from Umami only.

[oteku]

could be just a registery smart contract but that's a good point!

[rueshyna]

If we really want to know the safe is created by UI, the way is to find out the origination call and examine tzip16-metadata is marigold or not. tzip16-metadata could be changed after version 0.3.3.
Currently, there is no way to tracking that users are using safe by UI to send transactions unless put something like Google Analytics on UI,