Create a backend IO abstraction #731
Description
FWIW, similar to https://github.com/apache/arrow-rs/issues/6989#issuecomment-2599842842, you might want an abstraction that implements just the specific elements of `ObjectStore` you need, so that other backends like HTTP can be easily supported as well
Originally posted by @kylebarron in #730 (comment)