Refactor: Added explicit typing and void return types

- Introduced explicit typing to variables and functions across multiple scripts for better code clarity.
- Specified 'void' as the return type for functions that do not return a value.
- Removed redundant code in some scripts.

entities/scripts/state.gd

@@ -4,12 +4,12 @@ class_name State
 
 signal state_transition
 
-func enter(_msg := {}):
+func enter(_msg : Dictionary = {}) -> void:
 	pass
 	
-func exit():
+func exit() -> void :
 	pass
 	
-func update(_delta:float):
+func update(_delta : float) -> void:
 	pass