Disaply user groups in the user's course profile page

This information is currently displayed in the web version in the participants list and in the user course profile.

In the app we could display it in the same places.

There is an existing WS (core_group_get_course_user_groups) that we could use for this (works for teachers as well), but because is per user, for performance reasons we might need to only display the user groups in the profile page (not in the participant's list)

We should also check MDL-68093 because it might have some security implications.