Update hanyuu_commands.py

for .queue length, let l work for length, ex: .q l should work now
same for .fave last, should allow .fave l
    also allow .favorite instead of .fave, not that anyone will use it
did last>l for .unfave, mostly for consistency's sake

for .random fave, let "favorite" and "f" work in place of "fave"
oh god, do i have to put this in 2 more times for .random fave (name)? I think I did it right....

.lucky can be .l

what the hell, make .fl(ist) be .f(ave|avorite)l(ist)
    does anyone even use this? (nope)