Support OpenBSD's pkg_* for cleaning orphaned packages.

[Izder456]

What

I want to suggest a new clean step for OpenBSD.

Which tool is this about?

OpenBSD's pkg_*

Where is its repository?

not applicable

Which operating systems are supported by this tool?

OpenBSD

What should Topgrade do to figure out if the tool needs to be invoked?

• check if System Type is OpenBSD
• check if -c switch is flipped or topgrade.toml has autoclean enabled.

Which exact commands should Topgrade run?

pkg_delete -a

I can self-assign here if possible- I would be willing to implement this functionality myself when I get the chance.

[SteveLauC]

I can self-assign here if possible- I would be willing to implement this functionality myself when I get the chance.

Please go ahead ❤️

[Izder456]

necrobump sorry

working on now.

adding -c as well, which cleans config files as well, like apt purge:

from the manpage:

-c Delete extra configuration file, mentioned as
   @extra file
   in the packing-list.