add license, move folders

app/scripts/ui/menu/history.gd

@@ -0,0 +1,52 @@
+extends Resource
+class_name History
+
+var history: Array[String]
+var index := -1
+
+
+func get_current() -> String:
+	if index == -1: return ""
+	return history[index]
+
+
+func can_forw() -> bool:
+	return index + 1 < history.size()
+
+
+func can_back() -> bool:
+	return index > -1
+
+
+func add(url: String) -> void:
+	if url == get_current(): return
+	
+	index += 1
+	history.resize(index)
+	history.push_back(url)
+	print_history()
+
+
+func forw() -> String:
+	index += 1
+	print_history()
+	return history[index]
+
+
+func back() -> String:
+	index -= 1
+	print_history()
+	if index == -1:
+		return ""
+	return history[index]
+
+
+func clear() -> void:
+	index = -1
+	history.clear()
+	print_history()
+
+
+func print_history() -> void:
+#	Debug.logclr("History: " + str(history) + " Current: " + str(index), Color.DIM_GRAY)
+	pass