shallowProxy - similar to vue's shallowRef

[dts]

It would be nice to be able to create a shallow proxy, something that only does a reactive transform to the first level. Vue's "shallowRef" (https://vuejs.org/api/reactivity-advanced.html#shallowref) has this behavior - and it makes it easier to "ingest" large/weird objects. Sometimes I only care about dependency tracking at the top level, because the rest of it is tracked/managed elsewhere. I think this would give a good path forward in cases similar to #782.

[dai-shi]

Our solution is ref() in Valtio. It requires you to mark all properties you want ignore about tracking, but does it work for you?