Adds order_by statement for Delete and Update builders in SQLite

[belchior]

For crate feature sqlite you should enable this statement at SQLite before use in this library, more info

Basic API

#[cfg(any(feature = "sqlite", feature = "mysql"))]
{
  use sql_query_builder as sql;
  
  let delete = sql::Delete::new()
    .order_by("created_at asc");
    
  let expected = "ORDER BY created_at asc";
  assert_eq!(expected, delete.as_string());
}

References

• https://sqlite.org/lang_update.html
• https://sqlite.org/lang_delete.html