Check additional names from certificate alt names

[lafriks]

It could be nice to add option to request https certificate from already found subdomains and check if any of them has additional subject alt names.

I did only fast scroll through code so sorry if it already does this

[edoardogerosa]

Hi @lafriks and thanks for opening this issue. You do have a point and i'll look into it. At the moment DELATOR only mines certificate common names. I need to study google's certificate-transparency-go certificate types a little closer but i do believe that alt names should be retrievable with the following:

altNames := parsedEntry.X509Cert.Subject.ExtraNames

Don't hold me to account just yet though, i still need to do more research. Stay tuned.