Analog stick emulation with keyboard
Right now it's impossible to play games that require analog sticks with keyboard, hence Games 3.38 requires a gamepad to play N64 games.
I think this should be done on retro-gtk level since we have keyboard controls here anyway.
@nahuelwexd suggested the following control scheme:
IJKL for right stick, TFGH for left stick.
We could also move L3/R3 from 1/3 because this doesn't make sene, to e.g. R and U.