offline gnosis safe mechanics

[MaxSemenchuk]

@vacekj ::

• we create a gnosis safe that signs the attestations
• each attestation must be signed by 3 out of 4 signers.
• the first signer (next.js api route) sends to the next one, verifies the score, signs, sends to next one round-robin style, until enough signatures have been collected.
• it is then submitted to the chain

this significantly increases security because 3 of 4 signers would have to be hacked to be able to sign invalid attestations.

[mateodaza]

@MaxSemenchuk can you describe this one?

[MaxSemenchuk]

@vacekj can, i added, but not for the milestone 5 release