activity-alias support

[crazecoder]

<activity-alias
            android:name="DefaultAlias"
            android:enabled="true"
            android:targetActivity=".MainActivity">

java.lang.ClassNotFoundException: com.flutter.exanple.DefaultAlias
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:454)
at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.getMainActivityClass(FlutterLocalNotificationsPlugin.java:550)

[MaikuB]

Any chance you could submit a PR to resolve this issue? As Flutter's standard application template doesn't use aliases (at least last time I checked), this looks like a very specific use case. Furthermore, this is new concept for me as I don't do "pure" native Android development

[MaikuB]

Closing as PR was merged and released. Thanks