cooldown scoreboard

There's already a ton of things you can detect, such as food, health, armor and all the other things. With the current combat in minecraft, I think there should be a way to detect cooldown in minecraft.

The way this would work is the cooldown would be 0 - 100 (similar to the health scoreboard), and would go up depending on the percentage of the cooldown is. That's about it. Could be useful for either datapacks, maps, or any other thing wanting to touch upon the combat!