[FEATURE REQUEST] Support for Web Animations

[tungs]

Is your feature request related to a problem? Please describe. Web Animations operate a lot like videos. It would be interesting to investigate whether the API can be overwritten to allow for a virtual timeline. Also look into element.animate.

Describe the solution you'd like Add virtual timeline support for the Web Animations API.

Describe alternatives you've considered There is a polyfill that may possibly be adopted or adapted to automatically use the already supported JavaScript time handling functions.

Additional context Originally mentioned by @laggingreflex in tungs/timesnap#21