feat: add balancer v2 executor

foundry/lib/balancer-labs/v2-interfaces/contracts/pool-utils/IRecoveryMode.sol

@@ -0,0 +1,41 @@
+// 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;
+
+/**
+ * @dev Interface for the RecoveryMode module.
+ */
+interface IRecoveryMode {
+    /**
+     * @dev Emitted when the Recovery Mode status changes.
+     */
+    event RecoveryModeStateChanged(bool enabled);
+
+    /**
+     * @notice Enables Recovery Mode in the Pool, disabling protocol fee collection and allowing for safe proportional
+     * exits with low computational complexity and no dependencies.
+     */
+    function enableRecoveryMode() external;
+
+    /**
+     * @notice Disables Recovery Mode in the Pool, restoring protocol fee collection and disallowing proportional exits.
+     */
+    function disableRecoveryMode() external;
+
+    /**
+     * @notice Returns true if the Pool is in Recovery Mode.
+     */
+    function inRecoveryMode() external view returns (bool);
+}