feat(protocol): Add prover param

[Brechtpd]

4 tests are still failing.

Also with the contesting and stuff, it's not as clear cut when to use msg.sender and the supplied prover... So this might be a more confusing feature than I first thought because there will need to be clear rules when which is used. So not so convinced anymore we should add this.

[dantaik]

4 tests are still failing.

Also with the contesting and stuff, it's not as clear cut when to use msg.sender and the supplied prover... So this might be a more confusing feature than I first thought because there will need to be clear rules when which is used. So not so convinced anymore we should add this.

4 tests are still failing.

Also with the contesting and stuff, it's not as clear cut when to use msg.sender and the supplied prover... So this might be a more confusing feature than I first thought because there will need to be clear rules when which is used. So not so convinced anymore we should add this.

Lets now do it for now, brecht. I think the issue you raised in the other PR about 'message.owner == msg.sender' in vaults is more critical. Do you want to fix it?

[Brechtpd]

Yeah agreed we can leave it for now.

I think the issue you raised in the other PR about 'message.owner == msg.sender' in vaults is more critical. Do you want to fix it?

Yeah will look into fixing that.

[Brechtpd]

Closing for now because not that important and pretty tricky.