Make spotipy working again

[tuxpeople]

This PR is a result of my issue #206 and this Twitter conversation.

The following has been changed:

• Buster instead of Jessie
• Leave apt source list of Mopidy in place for later upgrade
• Change from Python2 to Python3
• Replaced broken ttsgpio with raspberry-gpio
• Removed the use of patch. Instead of this, the script now simply creates a config file containing all the stuff needed. Mopidy would then use it's defaults for the rest.
• added client_id and client_secret

Caution:

• I tested it on my pirate radio. It should receive more testing
• I'm not a pro. Someone should look over my code
• On my radio, volume down ist not working. Maybe my bad soldering skills caused this, as all other buttons are working.

[Gadgetoid]

Thanks for tackling this- you don't know how helpful you've been!

I successfully ran this installer for default audio output and everything seems to work fine- the only thing that needs changing in that regard, as far as I can tell, is replacing "autoaudiosink" with "alsasink" because I didn't have audio out of the 3.5mm jack at first. This doesn't apply to configuring stuff like Pirate Radio though, I don't think.

I will have to dig up a Pirate Radio and verify with that. Your GPIO configuration looks correct to me- but Mopidy-Raspberry-GPIO has only been battle tested with the new Pirate Audio boards- heads or tails your soldering or my code 😆

[tuxpeople]

I'm happy to hear it's useful. I only tested it with my pirate radio (which does not have a 3.5mm jack). I'll test if I can hear something on my pirate radio speaker with alsasink.

[tuxpeople]

I've audio with alsasink as well.

[Gadgetoid]

Either way, looks like this is far less broken than the previous version so I'll merge what we have so far and see how it goes. Thank you again!