[xychart] make react-spring optional dependency

[sachinraja]

I don't use any of the Animated components in my Chart, so I do not want to install @react-spring/web, which gives me a ton of errors with React 18. Could we change the xychart package so the animated components are exported from a separate entry point and @react-spring/web and @visx/react-spring are declared as optional peer dependencies?

[williaster]

Yup, this is a great idea. When we first published the package I think I spent some time trying to do just this but hit some issues. I can try and take a look this week but if anyone else wants to take a shot I'm happy to 👀 a PR as well 🙏

[williaster]

Noting this would likely be a breaking change for this package

[minut-shan]

@williaster Do you have any updates on this?