Add cg_drawGun value to only draw non-weapons and throwables
Add `cg_drawGun 2` to only draw non-weapons and throwables (incl. grenades).
This helps to avoid adding config scripts and combined binds to achieve similar behavior when you want completely to hide the weapon models.
mod: draw melee and syringue weapon in cg_drawgun 2, refs #1324
- Add weapon type WEAPON_TYPE_BEAM for flamethrower
- Don’t draw flamethrower in cg_drawgun 2