Support Transient Labs auctions

[0xmichalis]

Contract: https://etherscan.io/address/0x6f66b95a0c512f3497fb46660e0bc3b94b989f8d
Example tx: https://etherscan.io/tx/0x9bed7bae2f6afa250f389bd0200d0613206edac711673a67855dad32cf5ec78b#eventlog
Event: AuctionSettled (index_topic_1 address sender, index_topic_2 address nftAddress, index_topic_3 uint256 tokenId, tuple listing)

Listing:

enum ListingType {
    NOT_CONFIGURED,
    SCHEDULED_AUCTION,
    RESERVE_AUCTION,
    RESERVE_AUCTION_PLUS_BUY_NOW,
    BUY_NOW
}

/// @dev The Listing struct contains general information about the sale on the auction house,
/// such as the type of sale, seller, currency, when the listing opens, and the pricing mechanics (based on type)
struct Listing {
    ListingType type_;
    bool zeroProtocolFee;
    address seller;
    address payoutReceiver;
    address currencyAddress;
    uint256 openTime;
    uint256 reservePrice;
    uint256 buyNowPrice;
    uint256 startTime;
    uint256 duration;
    address recipient;
    address highestBidder;
    uint256 highestBid;
    uint256 id;
}