openai assistants connection

Build core infrastructure to include the GPT-assistant technology and the new SDK

[x] reconnect all patterns to gpt-assistant architecture
- PASSED 20231125 @Mookse
[x] assign _factory to session not Member/MyLife
- factory pointer can be overwritten when logged in? but yes, should be contained in ctx.session as there will not be multiple factories per member session
- PASSED 20231126 @Mookse
[x] assign thread to session (logged in or otherwise)
- thread acquisition should reside in _factory
- PASSED 20231126 @Mookse
[x] store messages in Cosmos
- as conversations, matched by ids to avatar, ergo, if one needs to retrieve conversations per avatar, just search for parent_id
- when creating thread, create conversation in Cosmos, then add to that object via thread.id (but cosmos threadId)

MyLife-Services / mylife-maht