[Feature] storage pin memory support custom device. (#99712)
Fixes #99326
Support storage pin_memory and is_pinned for custom device, by calling dispatched tensor operations.
@ezyang this pr is what we have discussed in issue #99326, would you please take a moment to review it, thanks.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99712
Approved by: https://github.com/ezyang
