tweaks to connect AH to Pool

the AH cannot transfer() tokens unless it is first connected to the pool. initSuper() function now connects, must be called after first auction started

contracts/AuctionHouse.sol

@@ -32,6 +32,10 @@ import { INounsAuctionHouse } from './interfaces/INounsAuctionHouse.sol';
 import { INounsToken } from './interfaces/INounsToken.sol';
 import { IWETH } from './interfaces/IWETH.sol';
 
+interface GDAv1Forwarder {
+    function connectPool(address pool, bytes memory userData) external returns (bool);
+}
+
 contract NounsAuctionHouse is INounsAuctionHouse, PausableUpgradeable, ReentrancyGuardUpgradeable, OwnableUpgradeable {
     // The Nouns ERC721 token contract
     INounsToken public nouns;
@@ -189,11 +193,12 @@ contract NounsAuctionHouse is INounsAuctionHouse, PausableUpgradeable, Reentranc
     }
 
     /**
-     * @notice Set super token address
+     * @notice Set super token address & connects to pool
      * @dev Only callable by the owner.
      */
-    function setSuperToken(address _superToken) external onlyOwner {
+    function initSuper(address _superToken, GDAv1Forwarder _gda, address pool) external onlyOwner {
         superToken = _superToken;
+        _gda.connectPool(pool, "");
     }
 
     /**