add route test framework

contracts/intf/ISmartApprove.sol

@@ -0,0 +1,15 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+import {IERC20} from "./IERC20.sol";
+
+interface ISmartApprove {
+    function claimTokens(IERC20 token,address who,address dest,uint256 amount) external;
+}