Hi @dsis42 and welcome to the Community! :) That feature is currently not an option on this Library playlist. You can always copy the contents to a manual playlist though if you would like to make your songs public right now. The only thing is it will not automatically update when you save or unsave a track. There is a similar idea posted here too that you may find relevant and can vote on.
Hope this was useful and have a fantastic day! :)
Bethany_DawnRock Star 6
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Lol, the idea you linked to is from 2014 and the only discernible "progress" so far is a measly "we still think this is a good idea". This isn't going to get implemented because Spotify has some sort of business interest in not implementing it.