Add CNCF to the list

[iemejia]

Given the momentum of CNCF, and interesting question is what CNCF brings that is different, so maybe worth adding it to the site.

[ShaneCurcuru]

Apologies all; agreed CNCF should be added. Is there anyone who can help make a PR to capture some of the data in a consistent way with other projects?

[ShaneCurcuru]

To be clear, I didn't originally include CNCF since they're just an arm of the Linux Foundation, so arguably don't count. However the purpose is mostly to help independent projects find homes, so agree they should be added, with some changes in the org type.