[Courses] Possibility to set a favorite directly in the course

[DeteesWuber]

Problem statement:

It would be nice if you could set a course as a favorite directly in the course for a better overview and for saving time.

Proposed solution:

For example, you could place a star in the top right of a course, so that you can click on to set the course as a favorite with the option to remove is again straight from a course.

User role(s):

admin,instructor,ta