Add QubesOS and Whonix's next-gen onion services

Add

http://sik5nlgfc5qylnnsr57qrbm64zbdx6t4lreyhpon3ychmxmiem7tioad.onion/
http://dds6qkxpwdeubwucdiaord2xgbbeyds25rbsgr73tbfpqpt4a6vjwsyd.onion/

to the NextGenOnions trac wiki page.

Verification: https://www.qubes-os.org/news/2018/01/23/qubes-whonix-next-gen-tor-onion-services/