ownership & killable

src/IOwnable.sol

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @dev OpenZeppelin's Ownable contract, split into internal and external parts.
+ */
+interface IOwnable {
+    /**
+     * @dev The caller account is not authorized to perform an operation.
+     */
+    error OwnableUnauthorizedAccount(address account);
+
+    /**
+     * @dev The owner is not a valid owner account. (eg. `address(0)`)
+     */
+    error OwnableInvalidOwner(address owner);
+
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+
+    function owner() external view returns (address);
+    function renounceOwnership() external;
+    function transferOwnership(address newOwner) external;
+}