feat: Support Ekubo callback in TychoRouter

- add integration test
- cannot directly call _handleCallback from the locked method of the tycho router because of bytes memory to bytes callback conversion
- Rename to EkuboPoolKey because of conflict with USV4 pool key

- Bonus: fix bug where input token to swap method must be ERC20 (we should also support ETH)

foundry/src/executors/EkuboExecutor.sol

@@ -9,7 +9,7 @@ import {ILocker, IPayer} from "@ekubo/interfaces/IFlashAccountant.sol";
 import {NATIVE_TOKEN_ADDRESS} from "@ekubo/math/constants.sol";
 import {SafeTransferLib} from "@solady/utils/SafeTransferLib.sol";
 import {LibBytes} from "@solady/utils/LibBytes.sol";
-import {Config, PoolKey} from "@ekubo/types/poolKey.sol";
+import {Config, EkuboPoolKey} from "@ekubo/types/poolKey.sol";
 import {MAX_SQRT_RATIO, MIN_SQRT_RATIO} from "@ekubo/types/sqrtRatio.sol";
 
 contract EkuboExecutor is IExecutor, ICallback, ILocker, IPayer {
@@ -146,7 +146,7 @@ contract EkuboExecutor is IExecutor, ICallback, ILocker, IPayer {
                 : (nextTokenIn, nextTokenOut, false);
 
             (int128 delta0, int128 delta1) = core.swap_611415377(
-                PoolKey(token0, token1, poolConfig),
+                EkuboPoolKey(token0, token1, poolConfig),
                 nextAmountIn,
                 isToken1,
                 isToken1 ? MAX_SQRT_RATIO : MIN_SQRT_RATIO,