Please individually package `react-error-overlay`'s utils

Created by: ianstormtaylor

Is your proposal related to a problem?

I feel like the ecosystem would benefit from the frame/stack/parsing logic in react-error-overlay being packaged up as helpers people can use directly, instead of inline inside the error overlay code.

Next.js and Create React App have good error reporting, and pretty much everything else doesn't, even big projects like Vite. And I think part of the reason is because the logic to print nice errors, editor links, frame context, etc. is super convoluted.

If those internal utils were packaged nicely, so people can style them for their own purposes it would greatly benefit the ecosystem—it's probably one of the biggest DX levers that could be easily pulled.