Prop 147: [SIPS-136] Real Yield ETH Cellar Incentives

This proposal is intended to authorize a one-time transfer of 180,000 SOMM from the community pool to the CellarStaking contract, which is used to incentivize Real Yield ETH cellar depositors on Ethereum Mainnet.

See the corresponding forum post for more details: https://community.sommelier.finance/t/sips-136-upcoming-real-yield-eth-liquidity-mining-incentives-proposal/1288