Show Spaces beta card in Labs & My Communities view

the image is temporary

src/components/views/beta/BetaCard.tsx

@@ -0,0 +1,60 @@
+/*
+Copyright 2021 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 from "react";
+
+import {_t} from "../../../languageHandler";
+import AccessibleButton from "../elements/AccessibleButton";
+import SettingsStore from "../../../settings/SettingsStore";
+import {SettingLevel} from "../../../settings/SettingLevel";
+
+interface IProps {
+    title?: string;
+    featureId: string;
+}
+
+export const BetaPill = ({ onClick }) => {
+    return <span className="mx_BetaCard_betaPill" onClick={onClick}>
+        { _t("Beta") }
+    </span>;
+};
+
+const BetaCard = ({ title: titleOverride, featureId }: IProps) => {
+    const { title, caption, disclaimer, image } = SettingsStore.getBetaInfo(featureId);
+    const value = SettingsStore.getValue(featureId);
+
+    return <div className="mx_BetaCard">
+        <div>
+            <h3 className="mx_BetaCard_title">
+                { titleOverride || _t(title) }
+                <BetaPill />
+            </h3>
+            <span className="mx_BetaCard_caption">{ _t(caption) }</span>
+            <AccessibleButton
+                onClick={() => SettingsStore.setValue(featureId, null, SettingLevel.DEVICE, !value)}
+                kind="primary"
+            >
+                { value ? _t("Leave the beta") : _t("Join the beta") }
+            </AccessibleButton>
+            { disclaimer && <div className="mx_BetaCard_disclaimer">
+                { typeof disclaimer === "string" ? _t(disclaimer) : disclaimer() }
+            </div> }
+        </div>
+        <img src={image} alt="" />
+    </div>;
+};
+
+export default BetaCard;