feat(deezer): Add artist bio, top tracks, related artists and language support (#4720)

* feat(deezer): add functions to fetch related artists, biographies, and top tracks for an artist

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(deezer): add language support for Deezer API client

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(deezer): Use GraphQL API for translated biographies

The previous implementation scraped the __DZR_APP_STATE__ from HTML,
which only contained English content. The actual biography displayed
on Deezer's website comes from their GraphQL API at pipe.deezer.com,
which properly respects the Accept-Language header and returns
translated content.

This change:
- Switches from HTML scraping to the GraphQL API
- Uses Accept-Language header instead of URL path for language
- Updates tests to match the new implementation
- Removes unused HTML fixture file

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(deezer): move JWT token handling to a separate file for better organization

Signed-off-by: Deluan <deluan@navidrome.org>

* feat(deezer): enhance JWT token handling with expiration validation

Signed-off-by: Deluan <deluan@navidrome.org>

* refactor(deezer): change log level for unknown agent warnings from Warn to Debug

Signed-off-by: Deluan <deluan@navidrome.org>

* fix(deezer): reduce JWT token expiration buffer from 10 minutes to 1 minute

Signed-off-by: Deluan <deluan@navidrome.org>

---------

Signed-off-by: Deluan <deluan@navidrome.org>

tests/fixtures/deezer.artist.bio.json

@@ -0,0 +1,9 @@
+{
+  "data": {
+    "artist": {
+      "bio": {
+        "full": "<p>Schoolmates Thomas and Guy-Manuel began their career in 1992 with the indie rock trio Darlin' (named after The Beach Boys song) but were scathingly dismissed by Melody Maker magazine as \"daft punk.\" Turning to house-inspired electronica, they used the put down as a name for their DJ-ing partnership and became a hugely successful and influential dance act.</p>"
+      }
+    }
+  }
+}