Add actor for mysql migration RHEL9->RHEL10

[SlouchyButton]

Basic actor that just checks that the mysql-server package is installed and inform user if so.

There are incompatibilities, so there is an article attached describing the process (the article is WIP)

[github-actions]

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• /packit test --labels beaker-minimal-8.10to9.4,kernel-rt-8.10to9.4 to schedule kernel-rt and beaker-minimal test sets for 8.10->9.4 upgrade path

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[SlouchyButton]

/packit copr-build