Merge pull request #13 from Renzo-Protocol/slashing

add: 2.0 slashing upgrade

Author: pooleja

contracts/Bridge/Connext/core/IConnext.sol

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: MIT AND GPL-3.0
+pragma solidity 0.8.27;
+
+interface IwstETH {
+    /**
+     * @notice Exchanges wstETH to stETH
+     * @param _wstETHAmount amount of wstETH to uwrap in exchange for stETH
+     * @dev Requirements:
+     *  - `_wstETHAmount` must be non-zero
+     *  - msg.sender must have at least `_wstETHAmount` wstETH.
+     * @return Amount of stETH user receives after unwrap
+     */
+    function unwrap(uint256 _wstETHAmount) external returns (uint256);
+}