feat: 基本完成了主界面的制作

scripts/main_menu/create_game_ui.gd

@@ -0,0 +1,14 @@
+extends Node2D
+
+
+func _on_create_game_button_pressed() -> void:
+	var player_num = int($CreateGameEdit.text)
+	if 2 <= player_num and player_num <= 4:
+		MultiGame.create_server(int(player_num))
+		$".".hide()
+	else:
+		$Warn.show()
+
+
+func _on_warn_button_pressed() -> void:
+	$Warn.hide()