Update `fly ips list` to show which org flycast ips are associated with

[tvdfly]

fly ips allocate-v6 --private -o some_org

allocates a flycast ip for some_org, allowing apps in some_org to access the app via flycast. fly ips list shows these ips.

It gets a little confusing to figure out which ips are associated with which orgs when there are more than one.

How about adding a column to the fly ips list output that indicates which org the ips are associated with?