Fix imports

Author: briansztamfater

modules/react-native-status/android/src/main/java/im/status/ethereum/pushnotifications/PushNotificationHelper.java

@@ -19,6 +19,12 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Color;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.graphics.Rect;
+import android.graphics.RectF;
 import android.media.AudioAttributes;
 import android.media.RingtoneManager;
 import android.net.Uri;