How to create new database and user with the chart

Hi @Sergey_Pronin, in Is there a built-in way to get "CREATE DATABASE app;" and app user created? - #3 by Sergey_Pronin you said that this can be easily solved by automation tools. Can you please share couple (any) examples that I can go through and try to implement?

Also is there any ETA on the expected release of [K8SPXC-377] Create MySQL users through operator · Issue #9 · percona/roadmap · GitHub? Not looking for any set in stone date, just an expectation in terms of Q1/Q2 or something like that.