Add track status filter and counts, album track ids and bulk track deletion

GET /tracks/users/{userId} accepts repeated status values and returns the
albums each track belongs to. GET /tracks/users/{userId}/status-counts,
GET /albums/{id}/tracks/ids and DELETE /tracks with a list of track ids
are new.

backend/Hosts/Musify.Api/DataTransferObjects/Tracks/DeleteTracksRequest.cs

@@ -0,0 +1,4 @@
+namespace Musify.Api.DataTransferObjects.Tracks
+{
+    public record DeleteTracksRequest(IReadOnlyList<Guid> TrackIds);
+}