Keyboard shortcuts during AI review

[frostburn]

Is your feature request related to a problem? Please describe.
When going through AI review I have to click on the numbers in a mainline variation or the blue circle.

Describe the solution you'd like
I want to press a button on the keyboard instead to proceed with the mainline or with the blue circle.

Describe alternatives you've considered
As an alternative I've been chasing the blue circle around using the mouse cursor.

Additional context

A keyboard shortcut for proceeding with M14 (mainline) and another shortcut for playing R17 (current best suggestion).