Ability to open spotify: and https://open.spotify.com/ links

[jstarpl]

Is your feature request related to a problem? Please describe.
I would really like to open spotify: and https://open.spotify.com/ links in Psst instead of having to find the track/playlist/album/artist based on title.

Describe the solution you'd like
I think one solution might be to use a named local socket, using something like https://docs.rs/interprocess . The first running Psst instance would set up a socket and listen for Protobuf, JSON-RPC or some other simple protocol, for commands on what to do. Another Psst instance, with a specific command line - say --url spotify:playlist:xxx would connect to that socket, send a command and terminate.

Describe alternatives you've considered
Another option could be to have the Psst window be a drop-target for text, RegExp match on the text being dropped, and recognize a https://open.spotify.com/ text, parse it, and show/play whatever the link directs to.

Additional context
Having a named socket would open up the possibility of other integrations with Psst, like Stream Decks and such. I suppose that's already somewhat possible using global media hotkeys, but those are always at the mercy of the OS.

[jacksongoode]

This sounds like a great initiative, I've wanted to handle these links as well but it does require a listener for opening the applications. I think pasting Spotify links into the search bar does direct to the proper album/song.

[Pogodaanton]

Potential duplicate of #159 ?

open.spotify.com links do indeed work in the search bar for the time being. I regularly open songs/albums in Psst by pasting links shared to me into the search bar. However, playlist URLs do not work (#565)