Outreachy Presentations for the December 2023 Round

The OCaml community participated in the December 2023 round of [Outreachy](https://www.outreachy.org/) internships. Three interns worked on a range of projects including geometric creative coding libraries, dark mode for OCaml.org and building GUIs in OCaml. This meeting was an opportunity for the interns to present their work and for the community to ask questions and was [originally announced on the discuss forum](https://discuss.ocaml.org/t/outreachy-internship-demo-session/14247).