[Feature] Update PersonView to use PersonPicture control.

[shweaver-MSFT]

Describe the problem this feature would solve

The PersonPicture control is meant specifically for displaying a user's profile image and display name. That is mostly what PersonView does too, so for the sake of consistency we should consider adopting the control instead of supporting it manually.

Describe the solution

https://docs.microsoft.com/en-us/windows/apps/design/controls/person-picture