Hello there! I've made a script on python that is meant for easier pack generation(it does all the dirty job with the lua files, renaming songs, directories, you know). It's not strictly required to install python for this as I've compiled an executable for ease of use.
Here's the download link: https://jp4.s-ul.eu/rIpLSU8N
Full tutorial is inside the archive, including the updated upload tutorial, as the official one is now outdated due to workshop_uploader.exe being super old.