Add gpt-4-1106-preview model

[JosephTLyons]

This PR adds the gpt-4-1106-preview model. It required forking two repos from different organizations, as one is a submodule of another.

Update 1:

Currently, I'm just temporarily pointing towards a personal fork of the repo, but once this PR lands, we can switch back to using the official crate.

Update 2:

PR was merged, we are now pointing to a specific commit on the original official repo - may want to bump it to an official version once a new one has been released.

Update 3:

Author published a new version. Now, we are back to relying on the official crate.

Release Notes:

• Added support for the gpt-4-1106-preview model in the assistant panel.
• Updated the assistant.default_open_ai_model setting to default to gpt-4-1106-preview. To override the default, use the following snippet to your settings.json file:

"assistant": {
    // 1. "gpt-3.5-turbo-0613""
    // 2. "gpt-4-0613""
    // 3. "gpt-4-1106-preview"
    "default_open_ai_model": "<Your choice of model here>"
  },