A new page for Grid track animation should be added #6298

There's a page for CSS Grid (level 2) and a page for Subgrid (Grid level 2). But something that browsers did not universally ship with Grid 1 in 2017 is the ability to animate grid track (grid-template-columns and grid-template-rows).

Firefox added this ability sometime in early 2019. (It landed in Firefox Nightly in Jan 2019). Safari is adding this ability in Safari 16, and already added it to STP.

There is not anyplace to look up support for animating Grid tracks. MDN lists support for the properties, but only has a small note that these are CSS properties that should be animatable. Can I Use is the perfect place to store this data, especially now that broader support will bring more attention to the idea of making content move by using grids + animation.