Added 1 additional Grenade to Heavy Gunner Class

* +1x M67 Grenade
Added weapons to Ninja Class

* 1x MP5, x4 Clips Ammo
* 1x Desert Eagle, 3x Clips Ammo
* 1x M67 Grenade
* 10x Giant Shuriken - With additional stun/slow effect to come later.
* 1x Sai Blade (Melee Weapon)