[BIP-530] Enable sFRAX-FRAX gauge [Arbitrum]

PR with Payloads

https://github.com/BalancerMaxis/multisig-ops/pull/738

Summary:

We request adding sFRAX/FRAX pool on Arbitrum to BAL gauge as an uncapped core pool

References/Useful links:

Link to: • Website • Documentation • Github Page

Protocol Description:

FRAX is a decentralized stablecoin by Frax Finance, and sFRAX is a staked interest-bearing version of FRAX stablecoin.

Motivation:

The sFRAX-FRAX pool on Arbitrum is a key strategic tool in developing the Frax Finance ecosystem and enhancing the liquidity of both FRAX and sFRAX. By establishing this pool, Balancer has the potential to become a central hub for Frax asset liquidity on Arbitrum. Implementing the BAL gauge and core pool status will significantly facilitate this process, furthering our shared goals in the DeFi space.

Specifications:

1. Governance: FRAX governance forum can be seen here and snapshot here.
2. Oracles: Rate provider contract for FRAX and for sFRAX.
3. Audits: See here
4. Centralization vectors: see here.
5. Market History: See here
6. Value: Balancer will earn the protocol fee on interest-bearing sFRAX in the pool, and so will LPs.

Pool: https://arbiscan.io/address/0xdfa752ca3ff49d4b6dbe08e2d5a111f51773d395

Child Gauge: https://arbiscan.io/address/0x7dc6C96bf1c0ce2e5Ddad5601AFeCC0207b0870C#readContract

Root Gauge: https://etherscan.io/address/0x2aBd1863C84CdfEA63581D5b4BAb89B690B39DdF#code

Specification:

The Balancer Maxi LM Multisig eth:0xc38c5f97B34E175FFd35407fc91a937300E33860 will interact with the GaugeAdderv4 at 0x5DbAd78818D4c8958EfF2d5b95b28385A22113Cd and call the addGauge function with the following arguments: gauge(address):0x2aBd1863C84CdfEA63581D5b4BAb89B690B39DdF gaugeType(string): Arbitrum

Additionally, this pool is requesting core pool status as per BIP-457