[feature] Admin accounts endpoints; approve/reject sign-ups (#2826)

* update settings panels, add pending overview + approve/deny functions

* add admin accounts get, approve, reject

* send approved/rejected emails

* use signup URL

* docs!

* email

* swagger

* web linting

* fix email tests

* wee lil fixerinos

* use new paging logic for GetAccounts() series of admin endpoints, small changes to query building

* shuffle useAccountIDIn check *before* adding to query

* fix parse from toot react error

* use `netip.Addr`

* put valid slices in globals

* optimistic updates for account state

---------

Co-authored-by: kim <grufwub@gmail.com>

web/source/settings/admin/accounts/pending/index.tsx

@@ -0,0 +1,40 @@
+/*
+	GoToSocial
+	Copyright (C) GoToSocial Authors admin@gotosocial.org
+	SPDX-License-Identifier: AGPL-3.0-or-later
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+
+	You should have received a copy of the GNU Affero General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import React from "react";
+import { useSearchAccountsQuery } from "../../../lib/query";
+import { AccountList } from "../../../components/account-list";
+
+export default function AccountsPending() {
+	const searchRes = useSearchAccountsQuery({status: "pending"});
+
+	return (
+		<div className="accounts-view">
+			<h1>Pending Accounts</h1>
+			<AccountList
+				isLoading={searchRes.isLoading}
+				isSuccess={searchRes.isSuccess}
+				data={searchRes.data}
+				isError={searchRes.isError}
+				error={searchRes.error}
+				emptyMessage="No pending account sign-ups."
+			/>
+		</div>
+	);
+}