It was possible earlier, but you can’t submit your app now in AppStore without getting your app rejected during review. Please check here
It is not programmatically possible to switch Location Services ON or to directly open the Location Services page in the Settings app.
Your best choice would be to open just ‘settings’ when required, using the diagnostics plugin and use the method switchToSettings() as described here
Please note that you can use the same diagnostics plugin to open location services settings in Android and Windows 10 UWP using switchToLocationSettings() but not in iOS.