[AI] - [Sideloader doesn't work with housing mods]

[Rivos62]

I've been trying to make a mods that would add more housing items in AI maingame in housing mode like additional stairs or other building elements but couldn't get it to work. Lately I found a working hardmods of that type but again after converting them into zipmods they stopped working.

I've been reviewing the Sideloader code and found it has missing code to handle housing directory inside zipmods and can't inject any mod parts that aren't inside those few directories specified in code. Perhaps would be possible to add an experimental option for Sideloader to try to inject contents of all the directories found in zipmod.

[ManlyMarco]

See #122