CIP#18 - Incentive for providing on-chain CRV liquidity

This proposal aims to increase on-chain liquidity for CRV and use cases of veCRV by creating a new gauge that rewards Uniswap LPs (CRV:ETH).

Creating a new gauge means governance participants would then be able to allocate their voting power to it which would then reward stakers with CRV. The gauge would be introduced at 0 allocation.

The gauge would have a 50% admin fee on Uniswap profits which means 50% of profits would be collected by the DAO and distributed to veCRV holders on withdrawal. If there were no profits, the withdrawal fee will be free.