Adds the S3 `fileshare` implementation
This also updates `wsh file cp` so it behaves more like `cp` for things
like copying directories and directory entries. It's not meant to align
with `cp` on everything, though. Our `wsh cp` will be recursive and will
create intermediate directories by default.
This also adds new aliases for `wsh view`: `wsh preview` and `wsh open`
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Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: sawka <mike@commandline.dev>
Co-authored-by: Sylvia Crowe <software@oneirocosm.com>
