Results 2 issues of daomingq

Add uv_os_setaffinity/uv_os_getaffinity api to set/get cpu affinity mask for the specific process. Add uv_os_getcpu api to get the cpu on which the calling thread is running.

### Current Behavior OpenAI prompt contains user role and system role message, as example below: message = [ {"role": "system", "content": " You are AI assistant to help answer question"},...