Afegir partitures de llistes (cançoners)

folkugat_web/model/lilypond/score.py

@@ -89,3 +89,15 @@ class LilypondSet:
             self.title.encode(),
             *(tune.hash() for tune in self.tunes),
         )
+
+
+@dataclasses.dataclass
+class LilypondPlaylist:
+    title: str
+    sets: list[LilypondSet]
+
+    def hash(self) -> bytes:
+        return get_hash(
+            self.title.encode(),
+            *(lilypond_set.hash() for lilypond_set in self.sets),
+        )