add routes for getting recently added items

app/serializers/album.py

@@ -3,7 +3,10 @@ from app.models import Album
 
 
 def album_serializer(album: Album, to_remove: set[str]) -> dict:
-    album_dict = asdict(album)
+    try:
+        album_dict = asdict(album)
+    except TypeError:
+        return {}
 
     to_remove.update(key for key in album_dict.keys() if key.startswith("is_"))
     for key in to_remove:

app/serializers/artist.py

@@ -4,7 +4,10 @@ from app.models.artist import Artist
 
 
 def serialize_for_card(artist: Artist):
-    artist_dict = asdict(artist)
+    try:
+        artist_dict = asdict(artist)
+    except TypeError:
+        return {}
 
     props_to_remove = {
         "is_favorite",