add try-agagin func to solve speed rate limit in claude

[moxi000]

when I use claude api, always return anthropic.api.ApiException: ('post request failed with status code: 429', {'error': {'type': 'rate_limit_error', 'message': 'Number of concurrent connections to Claude exceeds your rate limit. Please try again, or contact [email protected] to discuss your options for a rate limit increase.'}}) then the process will be killed(end)