Function areNotesEquivalent

areNotesEquivalent(a: string, b: string): boolean
Defines an equivalence relationship over the notes, if they have the same chroma and belong to the same octave.
Parameters
- a: string
  The first note
- b: string
  The second note
Returns boolean
True if the note are equivalent, false otherwise
Example
```
areNotesEquivalent("C3", "C3") // true
areNotesEquivalent("C3", "C4") // false
areNotesEquivalent("D#3", "Eb3") // true
areNotesEquivalent("B2", "Cb3") // true
```
- Defined in packages/core/src/utils/music.ts:149