Adds Apple airplay/Google cast support to the app

android/app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK"/>
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"/>
 
     <application
         android:label="KRYZ Go!"
@@ -37,6 +38,9 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+        <meta-data
+            android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+            android:value="com.example.kryz_go_flutter.CastOptionsProvider" />
 
         <service
             android:name="com.ryanheise.audioservice.AudioService"