add serializer functions for track and album objects

app/serializers/album.py

@@ -0,0 +1,28 @@
+from dataclasses import asdict
+from app.models.album import Album
+
+
+def album_serializer(album: Album, to_remove: set[str]) -> dict:
+    album_dict = asdict(album)
+
+    to_remove.update(key for key in album_dict.keys() if key.startswith("is_"))
+    for key in to_remove:
+        album_dict.pop(key, None)
+
+    return album_dict
+
+
+def serialize_for_card(album: Album):
+    props_to_remove = {
+        "duration",
+        "count",
+        "albumartist_hashes",
+        "og_title",
+        "base_title",
+    }
+
+    return album_serializer(album, props_to_remove)
+
+
+def serialize_for_card_many(albums: list[Album]):
+    return [serialize_for_card(a) for a in albums]