Add 2020 OCaml workshop videos

[pitag-ha]

This would be a good first issue for anyone looking to get started improving and contributing to OCaml.org.

On the media page there are a couple of videos about OCaml, most of them rather old though.

I suggest to add the 2020 OCaml workshop videos there. For example, that could be done in a new subsection called "2020 OCaml workshop", which contains a link to each video and a short explanation about it such as the name of the talk, the name of the speaker(s) and the abstract. The abstracts can be found here.

[ith8]

I'm interested in working on this.

[pitag-ha]

Sure @ith8, go ahead :)

[dldisha]

Hey, @pitag-ha can I also work on this issue?

[pitag-ha]

@dldisha , thanks for your interest :) but there can only be one person working on an issue. Otherwise we might duplicate the work done. We will add more issues tomorrow, so tomorrow you should be able to get an issue no one is working on yet.

[dldisha]

Okay, no problem. I'll wait for new issues.

[pitag-ha]

Hi @ith8, are you still working on this issue? Do you need any help? No pressure! I just want to know how it's going :)

[dldisha]

Hi @pitag-ha can I take this issue if @ith8 is not working on it?

[pitag-ha]

Hi @dldisha , sure, go ahead :)

[avsm]

Just one refinement to this issue: it would be best to add the videos directly into the existing OCaml 2020 workshop page: https://ocaml.org/meetings/ocaml/2020/

That hasn't been updated to include links to the video, and that would be useful and avoid duplication. The videos page could then link to the OCaml 2020 page instead.