[BIP-897] Gauge proposal for iUSD-msUSD with 5% cap

Gauge Proposal Template: **Summary:** > Proposal to add gauge support for the new **iUSD-msUSD** Composable Stable pool on Balancer v3 for Ethereum. **References/Useful links:** > Link to: > https://www.infinifi.xyz/ > https://docs.infinifi.xyz/ > https://github.com/InfiniFi-Labs/infinifi-protocol > https://metronome.io/ > https://odyssey.finance/ ## PR with Payload https://github.com/BalancerMaxis/multisig-ops/pull/2586 ** Protocol Description:** ### infiniFi infiniFi is a decentralized...