Update refresh utils for Remix support

[ArnaudBarre]

__beforePerformReactRefresh & __getReactRefreshIgnoredExports will not be part of semver until Remiix on Vite is stable (and without Fast Refresh related stuff being vendored).

I'll do the same on the Babel plugin once I've got some positif feedback from @pcattori

[sapphi-red]

I guess it'd nice to support registering multiple functions.
For example:

const hooks = []
window.__registerBeforePerformReactRefresh = (cb) => {
  hooks.push(cb)
}

// run in enqueueUpdate
hooks.forEach(hook => hook())

// framework code

window.__registerBeforePerformReactRefresh(() => {
  // do something that's needed
})

Another way to expose this functionality is to use an exported function:

import { registerBeforePerformReactRefreshHook } from '/@react-refresh-api'

registerBeforePerformReactRefreshHook(() => {
  // do something that's needed for that framework
})

I'm not sure which is better.

[ArnaudBarre]

This made me remind that Remix need this to be async
The second option is cleaner, but requires the remix client to passe through Vite pipeline or to handle base path, and I'm not sure it's the case for now

[sapphi-red]

If this interface meets the needs of the remix, it looks good to me.