Fixed crossbows, implemented fireworks both as ammo for crossbows and as standalone items

[RyeWollschlaeger]

The crossbows were broken, the multishot enchantment was hardcoded to only shoot 3 arrows at a time no matter the enchantment level, and having too high quick charge lead to an item use duration of 0, which also broke the crossbows. Also implemented fireworks as ammo for crossbows, and to be able to be placed down normally.

Also made lerp(), prevPitch and prevYaw protected instead of private, and edited shootFromRotation() to use a different formula for it's yaw, which orbits around the shooter, instead of having the same pitch no matter what (this was needed for vanilla multishot parity).

Closes #75

[RyeWollschlaeger]

Crossbows don't take item damage when shot. I don't know why. I'll need to look into that more

[TogAr2]

I simplified the crossbow loading logic, also fixing an issue where other players would not see the animation when you hold right mouse button for longer than the loading time (Minestom's FinishItemUseEvent automatically cancels the animation, so I don't use it anymore).
Could you tell me if the bug you described in the comment is still present?

[RyeWollschlaeger]

Could you tell me if the bug you described in the comment is still present?

The bug seems to be gone now thank you. I'll add a commit removing the TODO and add some minor fixes