Voice Broadcast playback UI (#9362)

* Implement Voice Broadcast UI

* Update src/voice-broadcast/models/VoiceBroadcastPlayback.ts

Co-authored-by: Travis Ralston <travisr@matrix.org>

Co-authored-by: Travis Ralston <travisr@matrix.org>

src/voice-broadcast/utils/shouldDisplayAsVoiceBroadcastRecordingTile.ts

@@ -0,0 +1,30 @@
+/*
+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 { MatrixClient, MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+import { VoiceBroadcastInfoState } from "..";
+
+export const shouldDisplayAsVoiceBroadcastRecordingTile = (
+    state: VoiceBroadcastInfoState,
+    client: MatrixClient,
+    event: MatrixEvent,
+): boolean => {
+    const userId = client.getUserId();
+    return !!userId
+        && userId === event.getSender()
+        && state !== VoiceBroadcastInfoState.Stopped;
+};