Added pick and select for lists

Pick: (1 2 3 4)?4 or (1 2 3 4)?(3 2)
Select: (1 2 3 4)~2 or (1 2 3 4)~(2 3)

ziffers/classes/items.py

@@ -433,7 +433,7 @@ class RomanNumeral(Event):
     pitch_classes: list = field(default=None, init=False)
     inversions: int = field(default=None)
     evaluated_chord: Chord = None
-
+    
     def set_notes(self, chord_notes: list[int]):
         """Set notes to roman numeral