Add visual tooltip to display available keyboard shortcuts

[Ovgodd]

Feature Request

Is your feature request related to a problem or unsupported use case?
No clear way to display keyboard shortcuts, which affects accessibility.

Describe the solution you'd like
Show a tooltip or modal listing shortcuts, with a menu to customize them.

Describe alternatives you've considered
Static documentation, but it's less accessible and not customizable.

Do you want to work on it through a Pull Request?
Yes,