Add user id parameter to CompletionRequest

[aleclarin]

First off, thanks for putting this library together, it's super helpful!

OpenAI's App Review/Usage Guidelines require requests to include the end-user ID:

All applications are required to receive approval through an App Review and to send end-user IDs with each request

Currently there's no user ID parameter in CompletionRequest.

[gbolcer]

Okay, read through the documentation. It should be easy to add .user("userwhatever") to the constructor. Let me see if I can do it myself and submit it.

'''
response = openai.Completion.create(
model="text-davinci-002",
prompt="This is a test",
max_tokens=5,
user="user123456"
)
'''

[TheoKanning]

Thanks for telling me about this!