Add utility for sql in kctf

We could create Cloud SQL instances through kCTF - and even add support for M/S scaling (optional) like with https://toniflorithomar.medium.com/mysql-replication-master-slave-google-cloud-sql-google-cloud-computer-84ec0ad761c5

Downside of M/S scaling is that writes become slower as it scales.
Upside of M/S scaling is that read-heavy tasks become fast and scale automatically.

We could try to do just normal/non-scaled SQL support as a start, and look at replication as we see usage patterns for different CTF tasks.