Punish Equivocation on Neutron by Pupmos and Citizen Cosmos

This governance proposal is the first attempt exercise the slashing procedure for equivocation in interchain security on mainnet.

Voters can validate that Tendermint detected these equivocations by setting the rpc node in neutrond config and running neutrond query evidence. There should be a formal decision by the ATOM governance if these validators should be slashed and tombstoned. This is the first test of the claim that interchain security provides equivalent security to an application hosted on the Hub iteself.