Amethyst clusters on top of note blocks should extend the note duration

Note blocks are already pretty nice, but you can only do so much with singular pings. I propose that placing the different tier amethyst clusters on top of the note block should extend the note's duration, in a resonance kind of way. This will likely revolutionize note block music and make for an even increased capability for players to make music. It also gives amethyst a new use, as well as incentivizing the player to go manually check on their farms. It also doesn't affect gameplay much and is completely optional, which is always a plus.