Add MtouchLink command to support XAML Hot Reload for iOS Devices

[Redth]

The default net6.0-ios SDK commands for debug mode on iOS devices sets it up to link to the SDK. That removes some required commands that let XAML Hot Reload work. While there is an error bar telling you what to do, we can change the template to allow it to work right the first time. If a user does change it, the error will still be there, and they can either change it back or ignore it.

VS bug #1749812

[ghost]

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.