input: Write a python function to create a simple Tkinter window with a label saying "Hello World".
  assert create_window() == "Tkinter window with 'Hello World' label created successfully"
output: import tkinter as tk
  
  def create_window():
      root = tk.Tk()
      root.title("Simple Tkinter Window")
      label = tk.Label(root, text="Hello World")
      label.pack()
      root.mainloop()
      return "Tkinter window with 'Hello World' label created successfully"