Add getLocationFlags getter to PackageManagerNative.

    long getVersionCodeForPackage(in String packageName);

    /*  ApplicationInfo.isSystemApp() == true */

    const int LOCATION_SYSTEM = 0x1;

    /*  ApplicationInfo.isVendor() == true */

    const int LOCATION_VENDOR = 0x2;

    /*  ApplicationInfo.isProduct() == true */

    const int LOCATION_PRODUCT = 0x4;

    /*  ApplicationInfo.isProductServices() == true */

    const int LOCATION_PRODUCT_SERVICES = 0x8;

    /**

     * Returns a set of bitflags about package location.

     * LOCATION_SYSTEM: getApplicationInfo(packageName).isSystemApp()

     * LOCATION_VENDOR: getApplicationInfo(packageName).isVendor()

     * LOCATION_PRODUCT: getApplicationInfo(packageName).isProduct()

     * LOCATION_PRODUCT_SERVICES: getApplicationInfo(packageName).isProductService()

     */

    int getLocationFlags(in @utf8InCpp String packageName);

}