Import data from Deezer

[Ectalite]

Deezer provides a complete set of the song history in xslx format.
It's possible to convert the data in csv format to be able to import them, but it is not a neat way to do it.
It would be really easier to support this file format.

[Ectalite]

Here is an anonymized example of the file format:
deezer-data_xxxxxxxxx.xlsx

[duckfromdiscord]

I could look into trying to implement this in a PR and/or my fork, but I'm really busy at the moment. Check out the Discord server at #226 if you want to talk to me.