Implement zksync compatibility

[bbenligiray]

Note that both the contract and the scripts will need to be updated

[acenolaza]

So this issue involves adding a modified version of the MerkleFunder contract like this one, right?

[bbenligiray]

Yeah, the thing is I think the way it's handled in @api3/airnode-protocol-v1 currently is super hacky (I copy pasted the addresses from that branch to main). Maybe I should have published an @api3/airnode-protocol-v1-zksync from that branch (or do that in a separate repo?), imported the addresses back in @api3/airnode-protocol-v1 and export it to the users. I'm still thinking about a nice way of going about it but it's now becoming a bit urgent with the upcoming Market support.