New items + base typing + price generation + new menu template

scripts/menu/OpenMenuButton.gd

@@ -0,0 +1,23 @@
+extends BaseButton
+
+@onready var trading_menu = $"../../TradingMenu"
+@onready var quest_menu = $"../../QuestMenu"
+@onready var equipment_menu = $"../../EquipmentMenu"
+@onready var info_menu = $"../../InfoMenu"
+
+func _ready():
+	button_up.connect(open)
+
+func open():
+	var menu
+	match name:
+		"TradingMenuGoto":
+			menu = trading_menu
+		"QuestMenuGoto":
+			menu = quest_menu
+		"EquipmentMenuGoto":
+			menu = equipment_menu
+		"InfoMenuGoto":
+			menu = info_menu
+	menu.visible = true
+	get_parent().visible = false