Add blog post for open ai assistants (#638)

* Add outline + update author list

* Update blog

* Fix typo

* Update website/blog/2023-11-13-OAI-assistants/index.mdx

Co-authored-by: Qingyun Wu <qingyun.wu@psu.edu>

* Update website/blog/2023-11-13-OAI-assistants/index.mdx

Co-authored-by: Qingyun Wu <qingyun.wu@psu.edu>

* Update website/blog/2023-11-13-OAI-assistants/index.mdx

Co-authored-by: Qingyun Wu <qingyun.wu@psu.edu>

* Add version number

* Add acknowledgements

* Update

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Co-authored-by: Qingyun Wu <qingyun.wu@psu.edu>