Implement Voice Broadcast recording (#9307)

* Implement VoiceBroadcastRecording

* Implement PR feedback

* Add voice broadcast recording stores

* Refactor startNewVoiceBroadcastRecording

* Refactor VoiceBroadcastRecordingsStore to VoiceBroadcastRecording

* Rename VoiceBroadcastRecording to VoiceBroadcastRecorder

* Return remaining chunk on stop

* Extract createVoiceMessageContent

* Implement recording

* Replace dev value with config

* Fix clientInformation-test

* Refactor VoiceBroadcastRecording

* Fix VoiceBroadcastRecording types

* Re-order getter

* Mark voice_broadcast config as optional

* Merge voice-broadcast modules

* Remove underscore props

* Add Optional types

* Add return types everywhere

* Remove test casts

* Add magic comments

* Trigger CI

* Switch VoiceBroadcastRecorder to TypedEventEmitter

* Trigger CI

* Add voice broadcast chunk event content

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

test/SdkConfig-test.ts

@@ -0,0 +1,41 @@
+/*
+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 SdkConfig, { DEFAULTS } from "../src/SdkConfig";
+
+describe("SdkConfig", () => {
+    describe("with default values", () => {
+        it("should return the default config", () => {
+            expect(SdkConfig.get()).toEqual(DEFAULTS);
+        });
+    });
+
+    describe("with custom values", () => {
+        beforeEach(() => {
+            SdkConfig.put({
+                voice_broadcast: {
+                    chunk_length: 1337,
+                },
+            });
+        });
+
+        it("should return the custom config", () => {
+            const customConfig = JSON.parse(JSON.stringify(DEFAULTS));
+            customConfig.voice_broadcast.chunk_length = 1337;
+            expect(SdkConfig.get()).toEqual(customConfig);
+        });
+    });
+});