[Mentoring][new feature] Possibility to see detailed satisfaction ratings

Based on a discord discussion it would be an interesting feature to get the possibility to see a detailed statistic what satisfaction ratings a mentor got.

A possibility would be to show a message when hovering the satisfaction percentage with a text like this:

Detailed satisfaction data:
Good: [y]
Acceptable: [z]
Problematic: [p]
Expired/not rated: [e]

We strip the top and bottom 5% of your ratings to calculate your satisfaction rate.