Multi-vault IS3USD + IronLend

There was a previous IronLend Ice proposal. This will build on that. https://app.iron.finance/lending https://app.iron.finance/farms New IS3USD vault that transfers farm rewards to IronLend ICE. IronLend ICE farm is auto-compounded. 1% fee transfer from IS3USD vault to Ironlend ICE 1% auto-compounding fee IronLend ICE