Proto commits in owntone/owntone-server

These 3 commits are when the Protocol Buffers files have changed:

Commit:3f9e400
Author:ejurgensen
Committer:ejurgensen

[spotify] Import version 0.4 of librespot-c and remove password-based login Experimental version to test new protocol

The documentation is generated from this commit.

Commit:6f0fef6
Author:ejurgensen
Committer:ejurgensen

[spotify] Reintroduce libspotify support, change spotifyc to librespot-c Select use of either libspotify or librespot-c as streaming backend via config option. librespot-c (renamed/improved spotifyc) impl has the following: - sync interface - seek support - honor bitrate config, set client and thread name - use web access token with "streaming" scope for login - fix issue with podcast playback Also say goodbye to file-based Spotify login.

Commit:a67c74b
Author:ejurgensen
Committer:ejurgensen

[spotify] Introduce own spotifyc as replacement for libspotify