iOS14 - Local Network permission support

Feature request

Support for Local Network permission needed (iOS14)

Why it is needed

With iOS 14 user may disallow Local Network permission for mobile app, which will deny access for app to local devices.
https://developer.apple.com/videos/play/wwdc2020/10110/

Possible implementation

Should be used like something like this:

    Permissions.getPermissionStatus('localNetwork').then((r) => {
        if (r === 'authorized') {
           // Do something
        } else if (r === 'undetermined') {
          Permissions.requestPermission('localNetwork').then((response) => {
              if (response === 'authorized') {
                           // Do something
              }
              if (response === 'denied') {
               // Notify user about Local Network permission denied, advice user to turn on permission
               }
            });
        } else {
               // Notify user about Local Network permission denied, advice user to turn on permission
        }
      });

The issue names the Permissions.getPermissionStatus('localNetwork') and Permissions.requestPermission('localNetwork') entry points and links the WWDC 2020 Local Network permission session. Start by tracing those APIs and the iOS permission handling; done should include authorized, undetermined, and denied behavior for iOS 14. No repository files or tests are identified, so the implementation scope needs clarification.