[atlas] Credits sharing and other new features

Dear colleagues, many of you have been asking for the credits sharing options, and now we have added two new ways that you can go about it: - standing orders - share access - and the transfers are still possible too All about credits: https://atlas.ripe.net/docs/credits/ In addition to that, in the past few months, we've added some other new features and functionality to RIPE Atlas, including making the DNSMON code available on GitHub for personal use, displaying IPv4 vs IPv6 comparisons in LatencyMON, and new limits on probes per measurement and results per day. Learn more about the latest updates on RIPE Labs: https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-altas-update-dnsmon... Regards, Vesna