Implements modifier system for weapons

Adds a modifier system allowing dynamic modification of weapon
stats and behavior. This includes:

- Creating ModifierLibrary to manage available modifiers.
- Adds ModifierManager to handle equipping and unequipping modifiers
- Adds a new RangedWeaponComponent to handle firing projectiles and
  managing modifiers.
- Introduces a DebugUI for in-game modifier management.
- Introduces an "Unlimited Power" modifier that changes the projectile scene.
- Modifies stats components to work with the new modifier system.

This system allows for more flexible and customizable weapon
functionality.

player/weapons/ranged_weapon.gd

@@ -106,7 +106,6 @@ func add_modifier(modifier: Modifier):
 func remove_modifier(modifier_id: String):
 	pass
 	#stats.remove_modifier(modifier_id)
-
 func _on_stats_updated():
 	# Update any visual components based on new stats
 	# For example, if weapon appearance changes based on damage/fire rate