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.

ui/scripts/game_over_component.gd

@@ -1,15 +1,15 @@
 extends Control
 
-@onready var main_menu_button = get_node("%MainMenu")
+@onready var main_menu_button : Button = get_node("%MainMenu")
 
-func _ready():
+func _ready() -> void:
 	visible = false
 	main_menu_button.connect("pressed", Callable(self, "on_main_menu_pressed"))
 
-func _process(_delta):
+func _process(_delta : float) -> void:
 	if GameState.game_over == true:
 		visible = true
 
-func on_main_menu_pressed():
+func on_main_menu_pressed() -> void:
 	GameState.reset()
 	SceneMgr.load_scene("MAINMENU")