Easing Functions (Tweening)

[sakgoyal]

Is your feature request related to a problem? Please describe.
Would you consider adding CSS style easing functions to something like @std/animations

I would like functions like these: https://easings.net/
to be in std. (optional) so they can be optimized into the rust code directly
Describe the solution you'd like

Describe alternatives you've considered
There are lots of packages that do this already like d3-ease. but there are many duplicate packages with the same functions. id like it to be standard so Deno users don't have to choose which one to use.