input: Write a python function to create a sine wave spreadsheet.
  assert create_sine_wave_spreadsheet('sine-wave.csv')==None
  assert pd.read_csv('sine-wave.csv').shape == (63, 2)
  assert list(pd.read_csv('sine-wave.csv').columns) == ['x', 'y']
output: def create_sine_wave_spreadsheet(filename):
      import numpy as np
      import pandas as pd
  
      x_values = np.linspace(0, 2 * np.pi, 63)
      y_values = np.sin(x_values)
      
      data = {'x': x_values, 'y': y_values}
      df = pd.DataFrame(data)
      
      df.to_csv(filename, index=False)