Completing Outreachy-Participants.md

[chriscool]

Hi @sivaraam, @jnareb, @mjaix, @stepnem, @gitster,

As Kaartic kindly worked on improving our GSoC-Participants.md page (see #799), I just created a similar Outreachy-Participants.md page in 29f7297 with minimal information.

I think I found all the Outreachy intern we mentored, as I think they were all mentioned in Git Rev News editions, and it seems to me that since Winter 2017-2018, we have mentored an intern every Winter except 2021-2022 and 2022-2023. But you might want to check and maybe complete the file with more information, like the name of their project, the mentors, maybe even the company that sponsored the internships, etc.

[chriscool]

Thanks to @lucasoshiro 's work, I could add all the blogs in c0f5a04.

As Outreachy is not providing a lot of information, I think we have the most important information, so I am closing this. We can always reopen if we think we should add other things.