Change Mpd configuration

[bitlab]

@mvidalz22 mpd modifications are based on merging the generated mpd file and your own wanted mods.

How to:
* Open a terminal prompt to your moode settup
* Place the file with your mods in /etc/mpd.custom.conf  (only the mods, not the entire file)
* Enable the dev tweaks for it:
   moodeutl -A add 32768
* [New] Due some changes in moode it is now also required to remove the original mpd.conf:
   sudo rm /etc/mpd.conf
* Restart moode to run the merge:
   moodeutl -r

You can inpsect the merged output in /etc/mpd.conf.
If you want to disable the option again:
* Disable the dev tweaks for it:
   moodeutl -A rm 32768
* [New] Due some changes in moode it is now also required to remove the original mpd.conf:
   sudo rm /etc/mpd.conf
* Restart moode to run the merge:
   moodeutl -r


You can find more info about mpd conf modifications in:
* The thread https://moodeaudio.org/forum/showthread....ustom.conf 
* The github issue https://github.com/moode-player/moode/issues/156