Rename notes.* to note.* & Add some music symbols (#4488)

crates/typst/src/symbols/sym.rs

@@ -480,7 +480,6 @@ pub(crate) const SYM: &[(&str, Symbol)] = symbols! {
     checkmark: ['✓', light: '🗸', heavy: '✔'],
     crossmark: ['✗', heavy: '✘'],
     floral: ['❦', l: '☙', r: '❧'],
-    notes: [up: '🎜', down: '🎝'],
     refmark: '※',
     servicemark: '℠',
     maltese: '✠',
@@ -495,6 +494,51 @@ pub(crate) const SYM: &[(&str, Symbol)] = symbols! {
         spade.stroked: '♤',
     ],
 
+    // Music.
+    note: [
+        up: '🎜',
+        down: '🎝',
+        whole: '𝅝',
+        half: '𝅗𝅥',
+        quarter: '𝅘𝅥',
+        quarter.alt: '♩',
+        eighth: '𝅘𝅥𝅮',
+        eighth.alt: '♪',
+        eighth.beamed: '♫',
+        sixteenth: '𝅘𝅥𝅯',
+        sixteenth.beamed: '♬',
+        grace: '𝆕',
+        grace.slash: '𝆔',
+    ],
+    rest: [
+        whole: '𝄻',
+        multiple: '𝄺',
+        multiple.measure: '𝄩',
+        half: '𝄼',
+        quarter: '𝄽',
+        eighth: '𝄾',
+        sixteenth: '𝄿',
+    ],
+    natural: [
+        '♮',
+        t: '𝄮',
+        b: '𝄯',
+    ],
+    flat: [
+        '♭',
+        t: '𝄬',
+        b: '𝄭',
+        double: '𝄫',
+        quarter: '𝄳',
+    ],
+    sharp: [
+        '♯',
+        t: '𝄰',
+        b: '𝄱',
+        double: '𝄪',
+        quarter: '𝄲',
+    ],
+
     // Shapes.
     bullet: '•',
     circle: [