message: Add max_line_length to editorconfig
diff: root = true
  [*]
  +charset = utf-8
  end_of_line = lf
  -insert_final_newline = true
  -indent_style = space
  indent_size = 2
  -charset = utf-8
  +indent_style = space
  +insert_final_newline = true
  +max_line_length = 120
  trim_trailing_whitespace = true
  