Rewrite family sharing IDs for new Steam families

[Łukasz Domeradzki]

Checklist

• I read and understood ASF's Contributing guidelines
• I also read Setting-up and FAQ, I don't need help, this is an enhancement idea
• This is not a duplicate of an existing issue
• My idea doesn't duplicate existing ASF functionality described on the wiki
• I believe that my idea falls into ASF's scope and should be offered as part of ASF built-in functionality
• My idea doesn't violate the Steam Subscriber Agreement
• My idea doesn't violate the Steam Online Conduct
• This is not ASF-ui suggestion

Enhancement purpose

We need refactor in order to support https://store.steampowered.com/news/collection/steam/?emclan=103582791457287600&emgid=4149575031735702628

Solution

Wait for SteamRE/SteamKit#1342 to happen, then refactor existing GetFamilySharingSteamIDs(). We might need to union both while both systems are operative.

Why currently available solutions are not sufficient?

New family sharing steamIDs are not recognized by ASF. Not a major problem, but we should either support it or drop the feature entirely.

Can you help us with this enhancement idea?

Yes, I can code the solution myself and send a pull request

Additional info

No response