[feature/frontend] Add debug sections to settings panel (#2950)

* [feature/frontend] Add debug sections to settings panel

* max-width

* swagger

web/source/settings/views/admin/debug/caches/index.tsx

@@ -0,0 +1,52 @@
+/*
+	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 MutationButton from "../../../../components/form/mutation-button";
+import { useClearCachesMutation } from "../../../../lib/query/admin/debug";
+
+export default function Caches({}) {
+	const [clearCaches, clearCachesResult] = useClearCachesMutation();
+	function submit(e) {
+		e.preventDefault();
+		clearCaches();
+	}
+
+	return (
+		<div className="admin-debug-caches">
+			<form onSubmit={submit}>
+				<div className="form-section-docs">
+					<h2>Clear Caches</h2>
+					<p>
+						Clear internal in-memory caches
+						<br/>
+						This is useful for checking memory usage of caches, or for
+						clearing database cache results after manual database updates.
+					</p>
+				</div>
+				<MutationButton
+					disabled={false}
+					label="Clear caches"
+					result={clearCachesResult}
+				/>
+			</form>
+		</div>
+	);
+}