Add kth.se to `domains.csv` (#275)

share/domains.csv

@@ -157,6 +157,7 @@ inventati.org,mail.autistici.org,993,smtp.autistici.org,465
 itu.dk,imap-mail.outlook.com,993,smtp-mail.outlook.com,587
 kipras.org,mail.kipras.org,993,mail.kipras.org,587
 krutt.org,mail.autistici.org,993,smtp.autistici.org,465
+kth.se,webmail.kth.se,993,smtp.kth.se,587
 lavabit.com,lavabit.com,993,lavabit.com,587
 linuxmail.org,imap.mail.com,993,smtp.mail.com,587
 live.com,imap-mail.outlook.com,993,smtp-mail.outlook.com,587