Added menu resource and menu node

scripts/Base/actions_menu.gd

@@ -0,0 +1,37 @@
+extends Node
+
+@onready var actions: Array[Button] = [
+	$Action1,
+	$Action2,
+	$Action3,
+	$Action4,
+	$Action5,
+	$Action6,
+	$Action7,
+	$Action8
+]
+
+@export var menu: Menu
+
+func _ready():
+	load_menu()
+
+## Called when menu is changed
+func load_menu():
+	for i in range(len(menu.item_ids)):
+		if actions[i] is TransitButton:
+			actions[i].button_up.disconnect(transit_menu)
+		match menu.item_actions[i]:
+			Menu.Action.TransitAction:
+				actions[i].set_script("res://scripts/Classes/transit_button.gd")
+				actions[i].text = menu.item_ids[i]
+			Menu.Action.ButtonAction:
+				actions[i].set_script(menu.item_data[i])
+				actions[i].text = menu.item_ids[i]
+
+## Called with transit_button, changes current menu
+func transit_menu(id: int):
+	assert(id < len(menu.item_ids) and id > 0)
+	var new_menu = menu.item_data[id].duplicate()
+	menu = new_menu
+	load_menu()

scripts/Classes/menu.gd

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+extends Resource
+
+## Represents menu with actions, each action should map to a string id and data (if needed)
+class_name Menu
+
+enum Action {
+	## Represents when this menu should be replaced with another.
+	## Attach Menu next to it in item_data 
+	TransitAction,
+	## Represents scripts which should be attached to button on menu startup
+	## Attach Script next to it in item_data
+	ButtonAction,
+	## WIP, should represent LineEdit or some other input control
+	InputAction,
+	## WIP
+	OtherAction
+	}
+
+## Action string IDs. Should have same size as item_actions
+@export var item_ids: Array[String]
+## Action type. Should have same size as item_ids
+@export var item_actions: Array[Action]
+## Should have same size as other arrays
+@export var item_data: Array

scripts/Classes/transit_button.gd

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+extends Button
+
+## Represents button which changes menu resource on parent Menu
+class_name TransitButton
+
+## This is used when button_up is activated
+var id: int = -1
+
+func _ready():
+	button_up.connect(get_parent().transit_menu.bind(id))