GPT-3.5

[pannous]

Streamlined integration of openai adapter

[dbast]

For inspiration (in case this PR gets improved and polished):

• there now also is the gorialla-cli, which speaks to a hosted gorilla model... and as a pretty interesting user experience, by providing list with selectable commands.
• the openai Python package as proposed by this PR also allows to speak to a local GPT4ALL installation, as can be seen here https://github.com/nomic-ai/gpt4all/blob/main/gpt4all-bindings/python/docs/gpt4all_chat.md?plain=1#L104 ... so having the possibility to use it by defining host+port and not requiring a token would be pretty awesome!