On-chain events for swap

• Market makers should monitor the pool address for the following event to detect successful trades on-chain.

• Match the event by the quoteId.

event RfqTrade(
    address recipient,
    address sellerToken,
    address buyerToken,
    uint256 sellerTokenAmount,
    uint256 buyerTokenAmount,
    bytes16 quoteId,
    address signer
);