feat: add album description

tests/snapshots/youtube__music_album_audiobook.snap

@@ -17,6 +17,7 @@ MusicAlbum(
       name: "Dirk Jacobs",
     ),
   ],
+  description: None,
   album_type: Audiobook,
   year: Some(2022),
   by_va: false,

tests/snapshots/youtube__music_album_ep.snap

@@ -13,6 +13,7 @@ MusicAlbum(
       name: "Madeline Juno",
     ),
   ],
+  description: None,
   album_type: Ep,
   year: Some(2016),
   by_va: false,

tests/snapshots/youtube__music_album_one_artist.snap

@@ -13,6 +13,7 @@ MusicAlbum(
       name: "Oonagh",
     ),
   ],
+  description: None,
   album_type: Album,
   year: Some(2016),
   by_va: false,

tests/snapshots/youtube__music_album_show.snap

@@ -13,6 +13,7 @@ MusicAlbum(
       name: "Kingdom Force",
     ),
   ],
+  description: None,
   album_type: Show,
   year: Some(2022),
   by_va: false,

tests/snapshots/youtube__music_album_single.snap

@@ -17,6 +17,7 @@ MusicAlbum(
       name: "Vanessa Mai",
     ),
   ],
+  description: None,
   album_type: Single,
   year: Some(2020),
   by_va: false,

tests/snapshots/youtube__music_album_various_artists.snap

@@ -8,6 +8,7 @@ MusicAlbum(
   name: "＜Queendom2＞ FINAL",
   cover: "[cover]",
   artists: [],
+  description: None,
   album_type: Single,
   year: Some(2022),
   by_va: true,