feat: Refactor callback to use transient storage

With this, we don't need the univ3 specific method in the router contract. This should be flexible enough for most protocols that integrate

TODO: is this safe enough??

--- don't change below this line ---
ENG-4411 Took 1 hour 52 minutes

Took 4 minutes

Took 5 minutes

foundry/src/TychoRouter.sol

@@ -502,26 +502,6 @@ contract TychoRouter is AccessControl, Dispatcher, Pausable, ReentrancyGuard {
         require(msg.sender.code.length != 0);
     }
 
-    /**
-     * @dev Called by UniswapV3 pool when swapping on it.
-     * See in IUniswapV3SwapCallback for documentation.
-     */
-    function uniswapV3SwapCallback(
-        int256, /* amount0Delta */
-        int256, /* amount1Delta */
-        bytes calldata data
-    ) external {
-        if (data.length < 24) revert TychoRouter__InvalidDataLength();
-        // We are taking advantage of the fact that the data we need is already encoded in the correct format inside msg.data
-        // This way we preserve the bytes calldata (and don't need to convert it to bytes memory)
-        uint256 dataOffset = 4 + 32 + 32 + 32; // Skip selector + 2 ints + data_offset
-        uint256 dataLength =
-            uint256(bytes32(msg.data[dataOffset:dataOffset + 32]));
-
-        bytes calldata fullData = msg.data[4:dataOffset + 32 + dataLength];
-        _handleCallback(fullData);
-    }
-
     /**
      * @dev Called by PancakeV3 pool when swapping on it.
      */