Triage/add more projects

[yarikoptic]

We lead or participate in many more projects than listed. They could be found among

• https://github.com/con/
• and our https://github.com/con/solidation-con/blob/master/solidation.yaml

[candleindark]

DataLad-Registry is the only project that I am involved in that I think is suitable for the projects section. I am also involved with some sub-projects/repos under the DANDI umbrella which I don't think are suitable for the project section.

[yarikoptic]

you don't need to be involved (yet) to add a project @candleindark !