[Feature] Make the Windows autobuild script more complete

[LuciferSam8086]

GZDoom version

Git version

Which game are you running with GZDoom?

None

What Operating System are you using?

Windows 11

If Other OS, please describe

No response

Relevant hardware info

No response

Is your feature request related to a problem? Please describe.

More than a bug a feature request for the autobuild script or a warning in the docs.

I've noticed the script builds zmusic but no openal32.dll .

Describe the solution you'd like

I think the zmusic dll should be copied into the freshly made compiled directory and build openal32.dll or, at least, telling people to download that from a stable GZDoom release or from the official website (if that's possible)

Describe alternatives you've considered

No response

Add any other context or screenshots about the feature request here.

No response