test: handle ABS_MT_TOOL_TYPE from the litest devices

test: handle ABS_MT_TOOL_TYPE from the litest devices

We want to autoreplace this value where possible but not scale it to min/max,
this is effectively an enum. The same is true for slot/tracking id, so let's
add it here too.

Because it's an enum and 99% of the cases require MT_TOOL_FINGER, we always
fall back to that instead of using the axis_defaults that we use for other
axes.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>