android: Enable retaining app data after uninstall

src/android/app/src/main/AndroidManifest.xml

@@ -19,7 +19,8 @@
         android:name="org.yuzu.yuzu_emu.YuzuApplication"
         android:label="@string/app_name"
         android:icon="@drawable/ic_launcher"
-        android:allowBackup="false"
+        android:allowBackup="true"
+        android:hasFragileUserData="true"
         android:supportsRtl="true"
         android:isGame="true"
         android:banner="@drawable/ic_launcher"