input: Write a python function to find a match of a given pattern in a string using regular expressions.
  assert match_pattern("Hello World", "W.*d") == ("Match found!", 6, 11, "World")
  assert match_pattern("Hello World", "H.*o") == ("Match found!", 0, 5, "Hello")
  assert match_pattern("Hello World", "a.*z") == ("No match found!",)
output: def match_pattern(s, pattern):
      import re
      match = re.search(pattern, s)
      if match:
          return ("Match found!", match.start(), match.end(), match.group())
      else:
          return ("No match found!",)