[CLOSED] Express Relay Prototype

[zenyas]

Mainnet release is now up for vote:

CO-PIP 3: Release Express Relay on Mainnet

Abstract On the back of the positive feedback received from the community on the prototype deployed on testnet (here) and the completion of the security audit, this proposal is to implement the first instance of the Express Relay in production. To vote on this proposal, please proceed below: Rationale DeFi protocols and DeFi users will benefit from the Express Relay primitive to reduce value leaking to block builders Liquidation Searchers will benefit from broadening their access to liquida…