feat: add balancer v2 executor

foundry/lib/balancer-labs/v2-interfaces/contracts/pool-stable/IComposableStablePoolRates.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+pragma solidity >=0.7.0 <0.9.0;
+
+import "../solidity-utils/openzeppelin/IERC20.sol";
+
+interface IComposableStablePoolRates {
+    /**
+     * @dev Forces a rate cache hit for a token.
+     * It will revert if the requested token does not have an associated rate provider.
+     */
+    function updateTokenRateCache(IERC20 token) external;
+
+    /**
+     * @dev Sets a new duration for a token rate cache. It reverts if there was no rate provider set initially.
+     * Note this function also updates the current cached value.
+     * @param duration Number of seconds until the current token rate is fetched again.
+     */
+    function setTokenRateCacheDuration(IERC20 token, uint256 duration) external;
+}