Added main menu and settings

game/menu/main_menu.gd

@@ -0,0 +1,33 @@
+class_name MainMenu
+extends Control
+
+
+@onready var start_button : Button = $%StartButton
+@onready var options_button : Button = $%OptionsButton
+@onready var quit_button : Button = $%QuitButton
+
+
+func _ready() -> void:
+	_init_focus()
+	_setup_neighbors()
+
+
+func _init_focus() -> void:
+	start_button.grab_focus()
+
+
+func _setup_neighbors() -> void:
+	start_button.focus_neighbor_top = quit_button.get_path()
+	quit_button.focus_neighbor_bottom = start_button.get_path()
+
+
+func _on_start_button_pressed() -> void:
+	pass
+
+
+func _on_options_button_pressed() -> void:
+	get_tree().change_scene_to_file("res://game/menu/options_menu.tscn")
+
+
+func _on_quit_button_pressed() -> void:
+	get_tree().quit()