add: bulkwhitelist helper

contracts/utils/BulkWhitelist.sol

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity >=0.8.0;
+import "../Interfaces.sol";
+import "../utils/NameService.sol";
+import "./AdminWallet.sol";
+
+/* @title Admin wallet contract allowing whitelisting and topping up of
+ * addresses
+ */
+contract BulkWhitelist {
+	AdminWallet adminWallet;
+
+	constructor(AdminWallet _adminWallet) {
+		adminWallet = _adminWallet;
+	}
+
+	modifier onlyAdmin() {
+		require(adminWallet.isAdmin(msg.sender), "not admin");
+		_;
+	}
+
+	receive() external payable {}
+
+	function whitelist(
+		address[] memory _user,
+		string[] memory _did,
+		uint256[] memory orgChain,
+		uint256[] memory dateAuthenticated
+	) external onlyAdmin {
+		for (uint i = 0; i < _user.length; i++) {
+			adminWallet.whitelist(
+				_user[i],
+				_did[i],
+				orgChain[i],
+				dateAuthenticated[i]
+			);
+		}
+		uint256 toTop = address(this).balance;
+		payable(address(msg.sender)).transfer(toTop);
+	}
+
+	function removeWhitelisted(address[] memory _user) external onlyAdmin {
+		for (uint i = 0; i < _user.length; i++) {
+			adminWallet.removeWhitelist(_user[i]);
+		}
+
+		uint256 toTop = address(this).balance;
+		payable(address(msg.sender)).transfer(toTop);
+	}
+}