[Voting] Create a voter proxy to allow people to vote with locked SGT

[sharedStake-dev]

Requirements:
Create a voter proxy to allow people to vote with locked SGT

• Should fallback gracefully if pools/contracts do not exist
• Should inherit Ownable or some transferrable ownership ability from openzeppelin
• Should allow the owner to add new pools/contract addresses i.e. if a sushiswap pool is created later, or sett vaults or staking geyser addresses change, the admin should be able to change or add them
• Should support sushi swap pools
• Should support uniswap pools
• Should support 1inch pools
• Should support sett style vaults
• Should support current staking geysers (balanceOf(account) call)
• Should use SafeMath from openzeppelin for add/sub/mult

References:

• vfat/badger system: https://github.com/vfatouros/badger-voting-share/blob/main/contracts/BadgerVotingShare.sol
• contract for snap shot votes that count locked tokens https://github.com/starcard-org/yield-delegation/tree/master/contracts/utils
• live badger voting share contract: https://etherscan.io/address/0xca1f57ccb9e2ba18c49c873f4e51a5ef65b6e8dd#code

[sharedStake-dev]

Remedied by contract calls on snapshot.page so no longer needed