add events interface

packages/world-modules/src/modules/erc20-own-store/IERC20Events.sol

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.24;
+
+interface IERC20Events {
+  /**
+   * @dev Emitted when `value` tokens are moved from one account (`from`) to
+   * another (`to`).
+   *
+   * Note that `value` may be zero.
+   */
+  event Transfer(address indexed from, address indexed to, uint256 value);
+
+  /**
+   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
+   * a call to {approve}. `value` is the new allowance.
+   */
+  event Approval(address indexed owner, address indexed spender, uint256 value);
+}