feat(note): ✨ rename toPitchClass and create Pitch.toClass methods

lib/src/note/note.dart

@@ -271,7 +271,7 @@ final class Note extends Scalable<Note> implements Comparable<Note> {
   /// Note.c.isEnharmonicWith(Note.b.sharp) == true
   /// Note.e.isEnharmonicWith(Note.f) == false
   /// ```
-  bool isEnharmonicWith(Note other) => toClass() == other.toClass();
+  bool isEnharmonicWith(Note other) => toPitchClass() == other.toPitchClass();
 
   /// Returns this [Note] positioned in the given [octave] as a [Pitch].
   ///
@@ -402,11 +402,11 @@ final class Note extends Scalable<Note> implements Comparable<Note> {
   ///
   /// Example:
   /// ```dart
-  /// Note.c.toClass() == PitchClass.c
-  /// Note.e.sharp.toClass() == PitchClass.f
-  /// Note.c.flat.flat.toClass() == PitchClass.aSharp
+  /// Note.c.toPitchClass() == PitchClass.c
+  /// Note.e.sharp.toPitchClass() == PitchClass.f
+  /// Note.c.flat.flat.toPitchClass() == PitchClass.aSharp
   /// ```
-  PitchClass toClass() => PitchClass(semitones);
+  PitchClass toPitchClass() => PitchClass(semitones);
 
   @override
   String toString({NoteNotation system = NoteNotation.english}) =>

lib/src/note/pitch.dart

@@ -316,6 +316,16 @@ final class Pitch extends Scalable<Pitch> implements Comparable<Pitch> {
   int _semitonesWithoutAccidental(int semitones, Note referenceNote) =>
       semitones - referenceNote.accidental.semitones;
 
+  /// Creates a new [PitchClass] from [semitones].
+  ///
+  /// Example:
+  /// ```dart
+  /// Note.c.inOctave(4).toClass() == PitchClass.c
+  /// Note.e.sharp.inOctave(2).toClass() == PitchClass.f
+  /// Note.c.flat.flat.inOctave(5).toClass() == PitchClass.aSharp
+  /// ```
+  PitchClass toClass() => PitchClass(semitones);
+
   /// Transposes this [Pitch] by [interval].
   ///
   /// Example:

test/src/note/note_test.dart

@@ -630,13 +630,13 @@ void main() {
       });
     });
 
-    group('.toClass()', () {
+    group('.toPitchClass()', () {
       test('creates a new PitchClass from semitones', () {
-        expect(Note.c.toClass(), PitchClass.c);
-        expect(Note.d.sharp.toClass(), PitchClass.dSharp);
-        expect(Note.e.flat.toClass(), PitchClass.dSharp);
-        expect(Note.e.sharp.toClass(), PitchClass.f);
-        expect(Note.c.flat.flat.toClass(), PitchClass.aSharp);
+        expect(Note.c.toPitchClass(), PitchClass.c);
+        expect(Note.d.sharp.toPitchClass(), PitchClass.dSharp);
+        expect(Note.e.flat.toPitchClass(), PitchClass.dSharp);
+        expect(Note.e.sharp.toPitchClass(), PitchClass.f);
+        expect(Note.c.flat.flat.toPitchClass(), PitchClass.aSharp);
       });
     });
 

test/src/note/pitch_test.dart

@@ -495,6 +495,16 @@ void main() {
       });
     });
 
+    group('.toClass()', () {
+      test('creates a new PitchClass from semitones', () {
+        expect(Note.c.inOctave(4).toClass(), PitchClass.c);
+        expect(Note.d.sharp.inOctave(3).toClass(), PitchClass.dSharp);
+        expect(Note.e.flat.inOctave(-1).toClass(), PitchClass.dSharp);
+        expect(Note.e.sharp.inOctave(6).toClass(), PitchClass.f);
+        expect(Note.c.flat.flat.inOctave(5).toClass(), PitchClass.aSharp);
+      });
+    });
+
     group('.interval()', () {
       test('returns the Interval between this Pitch and other', () {
         expect(Note.c.inOctave(4).interval(Note.c.inOctave(4)), Interval.P1);