Prop 208: Create Senate CW3 Multisig Contract

This will instantiate the CW3 Multisig contract for the Kujira Senate. Source for this contract is available here. This contract will hold the Senate funds, manage proposals, votes, and execute the result of the proposals with the funds available. The threshold is set such that a minimum of 6 members of the CW4 Group contract must vote yes for a proposal to pass. The max voting period is set to two weeks (in seconds), however proposals can be executed as soon sa the threshold has been met. There is also a nominal 10USK deposit in order to limit spam proposals.