Changes

Generalize arrow launch into projectile launch

Will help for launching fireworks eventually

Implement multishot

Multishot works on both bows and crossbows. On bows, the arrows get vertical angles, while crossbows get horizontal arrows (once implemented)
May get tweaked later, went with this for simplicty so far

Generate crossbow textures

Implement crossbows

Modifier tweak: restrict power and quick charge

Consistency with vanilla, and makes the tools distinct. Give longbows damage, and crossbows speed

Make longbow pulling predicate even more strict

Its our only true indication of fully charged, so lets make it accurate