subdomain handling for coomer.su

[condor125]

coomer-cli does not download the majority of the files because they are on another subdomain and error out. Emy69/CoomerDL fixes that by trying other subdomains (ns1, ns2, ...)
Emy69/CoomerDL@97b4d2d.
Please add this functionality to coomer-cli

[M1noa]

if you add /data after the domain it gave it will respond with the correct file #6