Set EmptyBallotRoot values at contract deploy time instead of at build time about maci

[ctrlc03]

Great point, was just thinking about this today! @0xmad what you suggest here, should we add the ceremony param here so we publish the one compiled with 6 as stateTreeDepth?

[0xmad]

@ctrlc03 I think we can use github vars and if we need to change it in future we just change the var and trigger the build.

[ctrlc03]

@ctrlc03 I think we can use github vars and if we need to change it in future we just change the var and trigger the build.

I like this!