Add chips4makers to list

[Fatsie]

See #172 (comment)
Added separate issue for now in order to remind me. Will think about how to best add it.
Main worry I have now is that I try to limit exposure to the repos for the moment as I still plan to rework big part if not all of the APIs and I don't see myself currently having enough bandwidth to support other people working on contributions to the repos.

[umarcor]

@Fatsie, it's ok to add a note/warning in the description explaining that the content is "read-only" for now. Due to bandwidth, pending cleanups, whatever. IMHO, having an entry with the following refs would already be useful:

• https://chips4makers.io/blog/
• https://www.youtube.com/watch?v=4zNRTudEl_4
• https://archive.fosdem.org/2018/schedule/event/cad_os_asic/
• https://www.youtube.com/watch?v=xiBrZFaZ7hQ
• https://twitter.com/Chips4Makers

Anyway, no rush at all.