input: Write a python function to save the HTML content of a given URL to a text file.
  assert save_webpage_content("https://example.com", "example.txt") == True
  assert save_webpage_content("https://github.com", "github.txt") == True
output: def save_webpage_content(url, filename):
      import requests
  
      try:
          response = requests.get(url)
          response.raise_for_status()
          with open(filename, 'w', encoding='utf-8') as file:
              file.write(response.text)
          return True
      except Exception as e:
          return False