Adds ReactEventEmitter and full handling of broadcastStarted event

example/ios/BigBlueButtonMobileSdkBroadcastExample/SampleHandler.swift

@@ -0,0 +1,16 @@
+//
+//  SampleHandler.swift
+//  BigBlueButtonMobileSdkBroadcastExample
+//
+//  Created by Tiago Daniel Jacobs on 15/02/22.
+//
+
+import ReplayKit
+import bigbluebutton_mobile_sdk_common
+
+class SampleHandler: BBBSampleHandler {
+    override func broadcastStarted(withSetupInfo setupInfo: [String : NSObject]?) {
+      super.setAppGroupName(appGroupName: Constants.appGroupName)
+      super.broadcastStarted(withSetupInfo: setupInfo)
+    }
+}