.007 Full Weapons Rework

I completely reworked the weapon system. Melee and ranged weapons now run on the same code. In fact, the weapons themselves are invisible and their attacks are now all treated as projectiles.

v added grouped spawning

v when a weapon shoots multiple bullets, it now only produces one sound instance

v added crit text effect

v added coloring of picked up shard

v fixed rotation sequence

v revamped weapon system completely

v added sound effects for all weapons

v Added "Global.secondsPerIncrease" variable, which makes a wave more challenging as it goes on

v fixed polyphonic sound effects