feat: Add executor and selector to Swap

Add tests to Swap
Modify ExecutionDispatcher and TychoRouter to account for these changes

--- don't change below this line ---
ENG-4041 Took 57 minutes


Took 10 seconds

foundry/test/LibSwap.t.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.28;
+
+import "forge-std/Test.sol";
+import "../lib/LibSwap.sol";
+
+contract LibSwapTest is Test {
+    using LibSwap for bytes;
+
+    function testSwap() public view {
+        uint8 tokenInIndex = 1;
+        uint8 tokenOutIndex = 2;
+        uint24 split = 3;
+        address executor = 0x1234567890123456789012345678901234567890;
+        bytes4 selector = 0x12345678;
+        bytes memory protocolData = abi.encodePacked(uint256(456));
+
+        bytes memory swap = abi.encodePacked(
+            tokenInIndex, tokenOutIndex, split, executor, selector, protocolData
+        );
+        this.assertSwap(
+            swap, tokenInIndex, tokenOutIndex, split, executor, selector
+        );
+    }
+
+    // This is necessary so that the compiler accepts bytes as a LibSwap.sol
+    function assertSwap(
+        bytes calldata swap,
+        uint8 tokenInIndex,
+        uint8 tokenOutIndex,
+        uint24 split,
+        address executor,
+        bytes4 selector
+    ) public pure {
+        assert(swap.tokenInIndex() == tokenInIndex);
+        assert(swap.tokenOutIndex() == tokenOutIndex);
+        assert(swap.splitPercentage() == split);
+        assert(swap.executor() == executor);
+        assert(swap.executorSelector() == selector);
+    }
+}