#37684 provided the backend for this change. The key range interface
just wraps a `IndexedDBKeyRange` and exposes the methods from it as per
the spec.
Spec: https://www.w3.org/TR/IndexedDB-2/#keyrange
Testing: WPT tests (some regressions have been exposed, but that's fine)
---------
Signed-off-by: Ashwin Naren <arihant2math@gmail.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
