Add OpenAI o1-preview and o1-mini models

[josh-wong]

Description

This PR adds recently released OpenAI models o1-preview and o1-mini. For details about these models, see Introducing OpenAI o1-preview.

Related issues and/or PRs

N/A

Changes made

• Added o1-preview and o1-mini to the list of models.
• Mentioned the new model type in the README.

Checklist

The following is a best-effort checklist. If any items in this checklist aren't applicable to this PR, add N/A after each item.

Documentation

• I have updated the side navigation as necessary. N/A
• I have updated the documentation to reflect the changes.
• I have documented or updated any remaining open issues linked to this PR in GitHub, Obsidian, etc.

Build, deploy, and test

• I have merged and published any dependent changes in other PRs.
• I have commented my code, particularly in hard-to-understand areas.
• I have checked that my changes look as expected on a locally built version of the docs site. N/A
• My changes generate no new warnings.

[github-actions]

@josh-wong Not all items in the checklist have been checked👀

Please review the unchecked items in the PR description.

[github-actions]

@josh-wong Not all items in the checklist have been checked👀

Please review the unchecked items in the PR description.

[github-actions]

@josh-wong Not all items in the checklist have been checked👀

Please review the unchecked items in the PR description.

[github-actions]

All items in the checklist have been checked🎉

[github-actions]

All items in the checklist have been checked🎉