keyboard shortcuts are not discoverable

[githorse]

Kazam is great, but to maximize its value I need to start (or at least stop) recording with a keyboard shortcut, so that my clicking on the "Stop Recording" icon is not part of the screencast itself (see #28). But I only use Kazam every few weeks and in between I always forget what the shortcuts are and have to google around for them.

Could we add a clickable question mark in the interface, or a "Keyboard Shortcuts" option under the help menu, or otherwise somehow indicate to the user what the shortcuts are?

(Obviously it would be nice to be able to change these shortcuts as well, but that's a different question.)