Hello 👋, I'd like to implement the batch check API for Keto per https://github.com/ory/keto/issues/812. I've put up a PR https://github.com/ory/keto/pull/1521 with a rough draft of a potential implementation. I'm hoping to get some feedback from the maintainers to see if this in on a good path before polishing up the PR. I've added some specific questions I am wondering about into the PR description.