fix(meta): use correct total disc number count

[miraclx]

Deezer's API unfortunately, doesn't include any way to derive the total disc count of an album.

There's an alt-API we could use for this (which also provides us copyright information)

$ xh 'https://www.deezer.com/ajax/gw-light.php?method=deezer.getUserData&api_version=1.0&api_token=' \
  | jq '{cf: .results.checkForm, sid: .results.SESSION_ID}'
{
  "cf": "8MBdPkLVd3V~Exj0gJP0chXXXgM~2yb0",
  "sid": "fr0f7920da51b1f2b72dbbc7052a4a4141872d94"
}

$ xh 'https://www.deezer.com/ajax/gw-light.php?method=deezer.pageAlbum&api_version=1.0&api_token=8MBdPkLVd3V~Exj0gJP0chXXXgM~2yb0' \
    cookie:sid=fr0f7920da51b1f2b72dbbc7052a4a4141872d94 \
    alb_id:=264169542 lang=us \
  | jq -r '{total_discs: [.results.SONGS.data[] | .DISK_NUMBER] | unique | sort | reverse[0], copyright: .results.DATA.PRODUCER_LINE}'
{
  "total_discs": "3",
  "copyright": "(P) 2021 Floating World LTD"
}

[github-actions]

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docker pull freyrcli/freyrjs-git:pr-634

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