Is your feature request related to a problem? Please describe.
There are some shortcuts on tumlive, which aims to make user experience easier. However since these are not documented in a way that users can reach easily, they may be not used as expected. A general documentation is planned as we have spoken in the meetings, but this also targets mostly lecturers and even if a documentation for students is also added, as I am also a student, I think a more easier way for students will be used much more.

Describe the solution you'd like
As @alexanderstephan mentioned in #1281 here, a small keyboard logo can be added to relevant pages and when clicked, can show the shortcuts relevant. Additionally/Or depending on the shortcuts, that button can also be added in the settings page or an image showing the relevant shortcuts on keyboard can be added.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.