enable splitting android apps into bundles

Author: hawkrives

android/app/build.gradle

@@ -199,6 +199,18 @@ android {
         }
     }
 
+    bundle {
+        language {
+            enableSplit = true
+        }
+        density {
+            enableSplit = true
+        }
+        abi {
+            enableSplit = true
+        }
+    }
+
     dexOptions {
         // Skip pre-dexing when running on Travis CI or when disabled via -Dpre-dex=false.
         preDexLibraries = preDexEnabled && !ciBuild