Add librespot autoplay option

[itsfolf]

Proposed Changes

The Spotify connect addon currently does not support autoplay functionality, meaning it can't keep playing after a song/playlist is over. This PR adds this as an option.
Note that librespot autoplay is also quite unreliable at the moment (i.e. it does not work with singular songs), but it's the best we're getting until 0.5.0

[itsfolf]

Test logs

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Add-on: Spotify Connect
Play Spotify music on your Home Assistant device
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Add-on version: edge
You are running the latest version of this add-on.
System: Home Assistant OS 11.2  (amd64 / qemux86-64)
Home Assistant Core: 2023.12.1
Home Assistant Supervisor: 2023.11.6
-----------------------------------------------------------
Please, share the above information when looking for help
or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
s6-rc: info: service base-addon-banner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service base-addon-log-level: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service base-addon-log-level successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
services-up: info: copying legacy longrun spotifyd (no readiness notification)
[13:45:51] INFO: Starting the Spotify daemon...
s6-rc: info: service legacy-services successfully started
[2023-12-15T13:45:52Z INFO  librespot] librespot 0.4.2 UNKNOWN (Built on 2023-12-15, Build ID: zkYGpR6E, Profile: release)
[2023-12-15T13:46:14Z WARN  librespot_core::apresolve] Ignoring blacklisted access point ap-gue1.spotify.com:80
[2023-12-15T13:46:14Z INFO  librespot_core::session] Connecting to AP "ap-gew1.spotify.com:4070"
[2023-12-15T13:46:14Z INFO  librespot_core::session] Authenticated as "22letq7wmfdlr19856d5amorb" !
[2023-12-15T13:46:14Z INFO  librespot_playback::mixer::softmixer] Mixing with softvol and volume control: Log(60.0)
[2023-12-15T13:46:14Z INFO  librespot_core::session] Country: "BR"
[2023-12-15T13:46:14Z INFO  librespot_playback::convert] Converting with ditherer: tpdf
[2023-12-15T13:46:14Z INFO  librespot_playback::audio_backend::pulseaudio] Using PulseAudioSink with format: S16
[2023-12-15T13:46:15Z INFO  librespot_connect::spirc] Fetching autoplay context uri
[2023-12-15T13:46:15Z INFO  librespot_connect::spirc] Autoplay uri resolved to <"spotify:station:playlist:37i9dQZF1E38KLmUbpQoNj">
[2023-12-15T13:46:15Z INFO  librespot_playback::player] Loading <Solid as a Stone> with Spotify URI <spotify:track:51F0lTuW3n4MZTbIg0PSzS>
[2023-12-15T13:46:15Z INFO  librespot_connect::spirc] Resolved 50 tracks from <"spotify:playlist:37i9dQZF1E38KLmUbpQoNj">
[2023-12-15T13:46:15Z INFO  librespot_playback::player] <Solid as a Stone> (161343 ms) loaded
[2023-12-15T13:47:43Z INFO  librespot_playback::player] Loading <Flaming Hot Cheetos> with Spotify URI <spotify:track:1F6IbA7di42uPc3cff8PXV>
[2023-12-15T13:47:43Z INFO  librespot_playback::player] <Flaming Hot Cheetos> (123884 ms) loaded
[2023-12-15T13:47:59Z INFO  librespot_connect::spirc] Fetching autoplay context uri
[2023-12-15T13:47:59Z INFO  librespot_connect::spirc] Autoplay uri resolved to <"spotify:station:playlist:37i9dQZF1E38KLmUbpQoNj">
[2023-12-15T13:47:59Z INFO  librespot_playback::player] Loading <Remembering Myself> with Spotify URI <spotify:track:1bxC2M337HfYDOr6Dx5rlW>
[2023-12-15T13:48:00Z INFO  librespot_playback::player] <Remembering Myself> (210074 ms) loaded
[2023-12-15T13:48:00Z INFO  librespot_connect::spirc] Resolved 50 tracks from <"spotify:playlist:37i9dQZF1E38KLmUbpQoNj">
[2023-12-15T13:48:02Z INFO  librespot_playback::player] Loading <Shut up My Moms Calling> with Spotify URI <spotify:track:3hxIUxnT27p5WcmjGUXNwx>
[2023-12-15T13:48:02Z INFO  librespot_playback::player] <Shut up My Moms Calling> (164571 ms) loaded
[2023-12-15T13:48:02Z INFO  librespot_connect::spirc] Resolved 50 tracks from <"spotify:playlist:37i9dQZF1E38KLmUbpQoNj">

[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days. Thank you for your contributions.

[itsfolf]

Bump?

[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days. Thank you for your contributions.

[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days. Thank you for your contributions.

[cvl01]

@frenck Can you look at this and comment? Merging this feature would be much appreciated.