AIP - 104: Add XEVT to the Transmuter for EURA

## Context This is a proposal to add the OpenTrade EURC Yield Vault (XEVT) in order to provide Angle with a reliable, low cost, and efficient means of generating stable, low risk returns on EUR-denominated reserves backing EURA. ### OpenTrade Overview OpenTrade is an institutional grade platform for safe, compliant USDC & EURC yield products. Built by a team of former Centre (joint venture between Circle and Coinbase that launched and governed USDC/EURC) leaders, and backed by leading...