feat: Pancakeswap V3 support

foundry/src/TychoRouter.sol

@@ -518,6 +518,25 @@ contract TychoRouter is AccessControl, Dispatcher, Pausable, ReentrancyGuard {
         _handleCallback(fullData);
     }
 
+    /**
+     * @dev Called by PancakeV3 pool when swapping on it.
+     */
+    function pancakeV3SwapCallback(
+        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 UniswapV4 pool manager after achieving unlock state.
      */