Add cancelation interfaces

src/interfaces/IERC7540.sol

@@ -157,6 +157,98 @@ interface IERC7540Redeem {
     function claimableRedeemRequest(uint256 requestId, address owner) external view returns (uint256 claimableShares);
 }
 
+interface IERC7540CancelDeposit {
+    event CancelDepositRequest(
+        address indexed owner, uint256 indexed requestId, address sender
+    );
+
+    /**
+     * @dev Submits a Request for cancelling the pending deposit Request
+     
+     * - owner MUST be msg.sender unless some unspecified explicit approval is given by the caller,
+     *    approval of ERC-20 tokens from owner to sender is NOT enough.
+     * - MUST set pendingCancelDepositRequest to `true` for the returned requestId after request
+     * - MUST increase claimableCancelDepositRequest for the returned requestId after fulfillment
+     * - SHOULD be claimable using `claimCancelDepositRequest`
+
+     * Note: while `pendingCancelDepositRequest` is `true`, `requestDeposit` cannot be called
+     */
+    function cancelDepositRequest(uint256 requestId, address owner) external;
+
+    /**
+     * @dev Returns whether the deposit Request is pending cancelation
+     *
+     * - MUST NOT show any variations depending on the caller.
+     */
+    function pendingCancelDepositRequest(uint256 requestId, address owner) external view returns (bool isPending);
+
+    /**
+     * @dev Returns the amount of assets that were canceled from a deposit Request, and can now be claimed.
+     *
+     * - MUST NOT show any variations depending on the caller.
+     */
+    function claimableCancelDepositRequest(uint256 requestId, address owner)
+        external
+        view
+        returns (uint256 claimableAssets);
+
+    /**
+     * @dev Claims the canceled deposit assets, and removes the pending cancelation Request
+     
+     * - owner MUST be msg.sender unless some unspecified explicit approval is given by the caller,
+     *    approval of ERC-20 tokens from owner to sender is NOT enough.
+     * - MUST set pendingCancelDepositRequest to `false` for the returned requestId after request
+     * - MUST set claimableCancelDepositRequest to 0 for the returned requestId after fulfillment
+     */
+    function claimCancelDepositRequest(uint256 requestId, address owner) external;
+}
+
+interface IERC7540CancelRedeem {
+    event CancelRedeemRequest(
+        address indexed owner, uint256 indexed requestId, address sender
+    );
+
+    /**
+     * @dev Submits a Request for cancelling the pending redeem Request
+     
+     * - owner MUST be msg.sender unless some unspecified explicit approval is given by the caller,
+     *    approval of ERC-20 tokens from owner to sender is NOT enough.
+     * - MUST set pendingCancelRedeemRequest to `true` for the returned requestId after request
+     * - MUST increase claimableCancelRedeemRequest for the returned requestId after fulfillment
+     * - SHOULD be claimable using `claimCancelRedeemRequest`
+
+     * Note: while `pendingCancelRedeemRequest` is `true`, `requestRedeem` cannot be called
+     */
+    function cancelRedeemRequest(uint256 requestId, address owner) external;
+
+    /**
+     * @dev Returns whether the redeem Request is pending cancelation
+     *
+     * - MUST NOT show any variations depending on the caller.
+     */
+    function pendingCancelRedeemRequest(uint256 requestId, address owner) external view returns (bool isPending);
+
+    /**
+     * @dev Returns the amount of shares that were canceled from a redeem Request, and can now be claimed.
+     *
+     * - MUST NOT show any variations depending on the caller.
+     */
+    function claimableCancelRedeemRequest(uint256 requestId, address owner)
+        external
+        view
+        returns (uint256 claimableShares);
+
+    /**
+     * @dev Claims the canceled redeem shares, and removes the pending cancelation Request
+     
+     * - owner MUST be msg.sender unless some unspecified explicit approval is given by the caller,
+     *    approval of ERC-20 tokens from owner to sender is NOT enough.
+     * - MUST set pendingCancelRedeemRequest to `false` for the returned requestId after request
+     * - MUST set claimableCancelRedeemRequest to 0 for the returned requestId after fulfillment
+     */
+    function claimCancelRedeemRequest(uint256 requestId, address owner) external;
+}
+
 /**
  * @title  IERC7540
  * @dev    Interface of the ERC7540 "Asynchronous Tokenized Vault Standard", as defined in