feat: add Pauser

contracts/Pauser.sol

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: MIT
+pragma solidity =0.8.14;
+
+import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
+
+import {IPauser, IPauseContract} from "./interfaces/IPauser.sol";
+
+contract Pauser is IPauser, Ownable {
+
+    mapping(address => bool) public isPauseRole;
+
+    modifier onlyPauseRole() {
+        require(msg.sender == owner() || isPauseRole[msg.sender], "Pauser: not pause role");
+        _;
+    }
+
+    function pause(address pauseContract) external onlyPauseRole {
+        IPauseContract(pauseContract).pause();
+    }
+
+    function setPauseRole(address addr, bool flag) external onlyOwner {
+        isPauseRole[addr] = flag;
+        emit PauseRoleUpdated(addr, flag);
+    }
+}

contracts/interfaces/IPauser.sol

@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: MIT
+pragma solidity =0.8.14;
+
+/*
+
+░██╗░░░░░░░██╗░█████╗░░█████╗░░░░░░░███████╗██╗
+░██║░░██╗░░██║██╔══██╗██╔══██╗░░░░░░██╔════╝██║
+░╚██╗████╗██╔╝██║░░██║██║░░██║█████╗█████╗░░██║
+░░████╔═████║░██║░░██║██║░░██║╚════╝██╔══╝░░██║
+░░╚██╔╝░╚██╔╝░╚█████╔╝╚█████╔╝░░░░░░██║░░░░░██║
+░░░╚═╝░░░╚═╝░░░╚════╝░░╚════╝░░░░░░░╚═╝░░░░░╚═╝
+
+*
+* MIT License
+* ===========
+*
+* Copyright (c) 2020 WooTrade
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all
+* copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+interface IPauser {
+    /* ----- Events ----- */
+
+    event PauseRoleUpdated(address indexed addr, bool flag);
+
+    /* ----- External Functions ----- */
+
+    function isPauseRole(address account) external view returns (bool);
+
+}
+
+interface IPauseContract {
+
+    /* ----- External Functions ----- */
+
+    function pause() external;
+}