feat: add balancer v2 executor

foundry/lib/balancer-labs/v2-interfaces/contracts/solidity-utils/misc/IERC4626.sol

@@ -0,0 +1,72 @@
+// 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 "../openzeppelin/IERC20.sol";
+
+interface IERC4626 is IERC20 {
+    /**
+     * @dev `caller` has exchanged `assets` for `shares`, and transferred those `shares` to `owner`.
+     */
+    event Deposit(address indexed caller, address indexed owner, uint256 assets, uint256 shares);
+
+    /**
+     * @dev `caller` has exchanged `shares`, owned by `owner`, for `assets`,
+     *      and transferred those `assets` to `receiver`.
+     */
+    event Withdraw(
+        address indexed caller,
+        address indexed receiver,
+        address indexed owner,
+        uint256 assets,
+        uint256 shares
+    );
+
+    /**
+     * @dev Mints `shares` Vault shares to `receiver` by depositing exactly `amount` of underlying tokens.
+     */
+    function deposit(uint256 assets, address receiver) external returns (uint256 shares);
+
+    /**
+     * @dev Burns exactly `shares` from `owner` and sends `assets` of underlying tokens to `receiver`.
+     */
+    function redeem(
+        uint256 shares,
+        address receiver,
+        address owner
+    ) external returns (uint256 assets);
+
+    /**
+     * @dev The address of the underlying token that the Vault uses for accounting, depositing, and withdrawing.
+     */
+    function asset() external view returns (address);
+
+    /**
+     * @dev Total amount of the underlying asset that is “managed” by Vault.
+     */
+    function totalAssets() external view returns (uint256);
+
+    /**
+     * @dev The amount of `assets` that the Vault would exchange for the amount
+     *      of `shares` provided, in an ideal scenario where all the conditions are met.
+     */
+    function convertToAssets(uint256 shares) external view returns (uint256 assets);
+
+    /**
+     * @dev The amount of `shares` that the Vault would exchange for the amount
+     *      of `assets` provided, in an ideal scenario where all the conditions are met.
+     */
+    function convertToShares(uint256 assets) external view returns (uint256 shares);
+}