Add Gauge for Vesper vaFRAX Pool

Forum Post: https://gov.frax.finance/t/vesper-finance-vafrax-gauge/291

Proposal: Add the Vesper Finance vaFRAX pool token to FRAX Gauges

Abstract: vaFRAX is the tokenized pool share of Vesper's recently launched FRAX pool, which deploys FRAX deposits across miscellaneous strategies to compound yield on platforms like Aave, Rari Fuse, Curve, and Convex.

There are several key benefits to the FRAX ecosystem through this proposal:

1.) An easy-to-use, gas-conscious, secure mechanism for earning high yield on FRAX (note that Vesper will additionally award participants with VSP) 2.) Higher liquidity on protocols that are not as easily incentivized with gauges, such as Rari Fuse pools and Aave. 3.) A set of products for FRAX Protocol itself to earn yield on its own underlying treasury assets through vaFRAX and for assets supported by other Vesper pools.

Voting Options: For: Add vaFRAX pool token to veFXS gauges Against: Do nothing