Add Filter for animationsList

[Sisanu]

What problem does this address?

It would be a nice-to-have to add a filter for the animationsList. This would be especially useful for simplifying the list of animations shown in the editor.

What is your proposed solution?

import { applyFilters } from '@wordpress/hooks';

...

<AnimationPopover
	animationsList={ applyFilters( 'otter.blockAnimation.animationsList', animationsList ) }
	updateAnimation={ updateAnimation }
	currentAnimationLabel={ currentAnimationLabel }
	setCurrentAnimationLabel={ setCurrentAnimationLabel }
/>

Will this feature require documentation? (Optional)

Yes, it requires documentation.