Swappable storage for react-native

[pax-k]

Web5.connect() cannot be used in react-native because the cache property inside did-resolution-cache.ts defaults to new Level(). Anyway there are other places where Level is used and cannot be swapped.

I have opened a draft PR a while back, Swappable abstract-level storage, that fixes this issue.

Similarly, in the web5-wallet repo, there is an issue, Create a file-based DataStore for mobile's local DWN, that I was able to fix with a lib that we previously developed specifically for react-native storage.

If I bring the swappable draft PR up to date, would you be kind to review and merge it?