[zio-hackathon-2022] Add current_time function to MysqlSqlModule

[amrkamel]

Resolves #653

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ amrkamel
✅ jczuchnowski
❌ ri-amralloush
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[jczuchnowski]

@amrkamel @ri-amralloush you need to accept from the second account :)

[amrkamel]

closed because of the double users issue, I can't access the second user atm. will release a new PR