feat(oem/fv/ios): FirstVoices - system keyboard setup shortcut

**Is your feature request related to a problem? Please describe.**
We could greatly simplify the setup process for most users with little issue using similar code to what the main app has with option 2 here.


For recent versions of iOS, we can directly link into the app's Settings menu, rather than forcing users to memorize a long series of instructions to accomplish the same navigation.