Ice VS skyscraper

Sure, but it will be much better with Ice.

I used to use Ice for this very purpose on my old HTPC -- https://github.com/scottrice/Ice, but it appears to be a dead project. Glad to see this!

https://github.com/scottrice/Ice Interesting project adds roms into Steam and downloads metadata. I believe it's able to parse and edit the shortcuts.vdf file to add the games into steam itself.

ES Desktop is great but I prefer Skyscraper for media content https://github.com/muldjord/skyscraper/tree/master

Yes, but I would suggest to make it clear on the front page / README that the project is no longer being maintained and you would encourage someone to fork it if they want to continue development. For example, like this project did:

You can try skyskraper, at least there is "Skyscraper works perfectly on macOS" in the description

This might help: Resource Cache

you might also try skyscraper, its a CLI tool for scraping folders to generate metadata for pegasus and other frontends: https://github.com/muldjord/skyscraper

It's highly configurable through the command-line interface: https://github.com/muldjord/skyscraper/blob/master/docs/CLIHELP.md

Doing this by hand would be quite tedious, of course. Lars Muldjord's Skyscraper (https://retropie.org.uk/docs/Scraper/#lars-muldjords-skyscraper) has an "import" module to cache local resources (https://github.com/muldjord/skyscraper/blob/master/docs/IMPORT.md)