Allow spotify-player to launch without an internet connection

[DOD-101]

Is your feature already implemented in the latest master? No.

Is your feature request related to a problem? Please describe. When you try to launch spotify-player without an internet connection, it won't even show the UI simply printing:

Error: failed to lookup address information: Temporary failure in name resolution
Please check your internet connection.

If spotify-player is already running (at least as a daemon) it will crash when it doesn't have an internet connection anymore.

Describe the solution you'd like Ideally, spotify-player would launch, showing you the UI and then tell you there that it requires an internet connection to play music. This would not only make developing easier, without an internet connection, but would also make it clearer to people that the app works, but requires internet to play music.

The daemon on the other hand would continue running, without playing music, when an internet connection is lost and launch, but not play any music, without an internet connection.

Describe alternatives you've considered The daemon crashing isn't the most important thing, as one could set it up to restart, when connected to the internet again.

Additional context Add any other context or screenshots about the feature request here.