Created by: ceci3

1. random generate init token ✔︎
2. support set init token by user ✔︎
3. set temperature correlate with client num ✔︎
4. set temperature correlate with init token set by user or not ✔︎
5. fix the bug in self._current_token ✔︎
6. remove client_name in server if a client not request next tokens in double train one tokens' time. ✔︎