feat: add music artists

tests/snapshots/youtube__music_album_ep.snap

@@ -20,7 +20,7 @@ MusicAlbum(
     TrackItem(
       id: "aGd3VKSOTxY",
       title: "Ich wache auf",
-      duration: 221,
+      duration: Some(221),
       cover: [],
       artists: [
         ArtistId(
@@ -39,7 +39,7 @@ MusicAlbum(
     TrackItem(
       id: "lhPOMUjV4rE",
       title: "Waldbrand",
-      duration: 208,
+      duration: Some(208),
       cover: [],
       artists: [
         ArtistId(
@@ -58,7 +58,7 @@ MusicAlbum(
     TrackItem(
       id: "Bu26uFtpt58",
       title: "Verlernt",
-      duration: 223,
+      duration: Some(223),
       cover: [],
       artists: [
         ArtistId(
@@ -77,7 +77,7 @@ MusicAlbum(
     TrackItem(
       id: "RgwNqqiVqdY",
       title: "In Farbe",
-      duration: 221,
+      duration: Some(221),
       cover: [],
       artists: [
         ArtistId(
@@ -96,7 +96,7 @@ MusicAlbum(
     TrackItem(
       id: "2TuOh30XbCI",
       title: "Stadt im Hinterland",
-      duration: 197,
+      duration: Some(197),
       cover: [],
       artists: [
         ArtistId(