Support for the Chat functionality

[spekulant]

This is a meta ticket tracking the overall progress of implementing support for the (new) chat models.

The 3.5 models require a different request body structure and so are incompatible with the original implementation.

Communication options to implement:

• Single prompt (no history)
• Conversation (full history)
• Multiple conversations (conversation selection)

Overall progress

• Alfred
  • Single prompt Chat support for Alfred #5
  • Conversation
  • Multiple conversations
• Raycast
  • Single prompt Chat support for Raycast #3
  • Conversation
  • Multiple conversations
• Golang cli
  • Single prompt Chat support for the CLI #6
  • Conversation
  • Multiple conversations