input: Write a python function to create a tkinter window with a button that increases a counter displayed on a label.
  assert create_counter_window() # This should open a window where the counter increases on button press
output: import tkinter as tk
  
  def create_counter_window():
      window = tk.Tk()
      window.title("Counter")
  
      counter = tk.IntVar()
      counter.set(0)
  
      label = tk.Label(window, textvariable=counter)
      label.pack()
  
      def increase_counter():
          counter.set(counter.get() + 1)
  
      button = tk.Button(window, text="Increase", command=increase_counter)
      button.pack()
  
      window.mainloop()