split SettingsSection out of SettingsTab, replace usage (#10735)

* split SettingsSection out of SettingsTab, replace usage

* correct copyright

* fix VoipRoomSettingsTab

src/components/views/settings/shared/SettingsSection.tsx

@@ -0,0 +1,48 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { HTMLAttributes } from "react";
+
+import Heading from "../../typography/Heading";
+
+export interface SettingsSectionProps extends HTMLAttributes<HTMLDivElement> {
+    heading: string | React.ReactNode;
+    children?: React.ReactNode;
+}
+
+/**
+ * A section of settings content
+ * A SettingsTab may contain one or more SettingsSections
+ * Eg:
+ * ```
+ * <SettingsTab>
+ *      <SettingsSection heading="General">
+ *           <SettingsSubsection heading="Profile">
+ *              // profile settings form
+ *          <SettingsSubsection>
+ *          <SettingsSubsection heading="Account">
+ *              // account settings
+ *          <SettingsSubsection>
+ *      </SettingsSection>
+ * </SettingsTab>
+ * ```
+ */
+export const SettingsSection: React.FC<SettingsSectionProps> = ({ heading, children, ...rest }) => (
+    <div {...rest} className="mx_SettingsSection">
+        {typeof heading === "string" ? <Heading size="h2">{heading}</Heading> : <>{heading}</>}
+        <div className="mx_SettingsSection_subSections">{children}</div>
+    </div>
+);