Some adjustments to the lemon grenade

I just need to make the 'pull pin' animation and see about using Flubbman's Combustable Lemon as a base for the script, then to
stealborrow some stuff from various grenades like the HE Grenade and a Molotov that successfully makes fires around the area it hits if one exists
Probably not gonna flatshade it, even by using Smoothing Groups, because it'd just look strange, i think it looks good with how it is