Some `torch` functions not accepted on MPS

[Andrewwango]

Environment

Apple M1

Describe the bug

Some torch functions e.g. torch.logspace are unsupported on Apple silicon, leading NotImplementedError to errors. Since torch.logspace in particular is used in DPIR, the quickstart therefore does not run end-to-end on Apple M1.

Bug uncovered during ICMS tutorial.

For now, we should include a warning in deepinv.utils.get_device when M1 is selected @samuro95 warning the user of potential problems.

Steps to reproduce

Run the quickstart DPIR example on Apple M1.