PIP-06: JPEG Treasury Diversification

JPEG'd treasury stablecoin composition is almost entirely USDC.

I propose the JPEG'd DAO diversify their USDC composition into more decentralized stables such as LUSD, sUSD, MIM, RAI, and perhaps other forms of stables USDT, DAI, FRAX, and the future crvUSD to mitigate single point of failure.

Seeking the DAO's authority to diversify to these stablecoins into a mix deemed appropriate by multisig.