add game scene

scenes/game.gd

@@ -0,0 +1,12 @@
+extends Node
+
+@onready var back_button: Button = $BackButtonContainer/BackButton
+
+func _ready() -> void:
+	if not back_button.pressed.is_connected(_on_back_button_pressed):
+		back_button.pressed.connect(_on_back_button_pressed)
+
+func _on_back_button_pressed() -> void:
+	AudioManager.play_ui_click()
+	GameManager.save_game()
+	GameManager.exit_to_main_menu()