added ability to set media class of items

AobaCore/Services/AobaService.cs

@@ -20,7 +20,7 @@ public class AobaService(IMongoDatabase db)
 		return await _media.Find(m => m.LegacyId == id).FirstOrDefaultAsync(cancellationToken);
 	}
 
-	public async Task<Media?> GetMediaFromFileAsync(ObjectId id, CancellationToken cancellationToken = default)
+	public async Task<Media?> GetMediaAsync(ObjectId id, CancellationToken cancellationToken = default)
 	{
 		return await _media.Find(m => m.MediaId == id).FirstOrDefaultAsync(cancellationToken);
 	}

AobaCore/Services/ThumbnailService.cs

@@ -64,7 +64,7 @@ public class ThumbnailService(IMongoDatabase db, AobaService aobaService)
 		if (existingThumb != null)
 			return existingThumb;
 
-		var media = await aobaService.GetMediaFromFileAsync(mediaId, cancellationToken);
+		var media = await aobaService.GetMediaAsync(mediaId, cancellationToken);
 
 		if (media == null)
 			return new Error("Media does not exist");