Snap Events: scrollsnapchange and scrollsnapchanging

[alexander-schranz]

New events were released for scroll snaps. Would be nice to have this in caniuse:

https://groups.google.com/a/chromium.org/g/blink-dev/c/-naLTco_PEo/m/GwL4OA6dAQAJ

[Schweinepriester]

this could remain it's own issue, but is also part of #6335 🤓

[argyleink]

these 2 APIs are shipping in Chrome 129!

[argyleink]

post with lots of details https://developer.chrome.com/blog/scroll-snap-events