[deezer] Add support for full length songs

[jaimehrubiks]

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• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
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If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

• Playlist: http://www.deezer.com/playlist/2008373922
• Maybe albums and single videos too

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Description of your issue, suggested solution and other information

Current script will only download preview version of 30 seconds of each file and only playlists.

I suggest using this python script I found in Github
https://github.com/reversing-research/deezer-download/blob/master/deezer-download.py
It works out of the box (pending pull requests can be considered)

[deezerdl]

here is a pull request for this feature: #13194

[LucBerge]

Hello, I would like to add authentication support on deezer.com. I might be able to do it myself but there is no explanations on where to put the code. I can provide you valid credentials. The pull request #13194 can be closed since phihag did it well.

I just found out this : https://developers.deezer.com/api/oauth