Add `extractNativeLibs' flag to reduce apk size (#15638)

android/app/src/main/AndroidManifest.xml

@@ -32,7 +32,10 @@
             android:theme="@style/Theme.AppSplash"
             android:name=".MainApplication"
             android:largeHeap="true"
-            android:usesCleartextTraffic="true">
+            android:usesCleartextTraffic="true"
+            android:extractNativeLibs="true">
+<!--        After upgrading Android Gradle Plugin to 4.2.0 and above we must get rid of `extractNativeLibs="true"`
+            and use`useLegacyPackaging` flag in our app's `build.gradle`-->
         <meta-data android:name="commitHash" android:value="${commitHash}"/>
         <activity
                 android:name=".MainActivity"