Implement `NumpyStorage` module

[mortendahl]

Implement a relatively simple storage module in moose_modules that can load and save .npy files. Implementation can assume that the target use cases for now are OSS and benchmarking.

[mortendahl]

@kkloberdanz I can't remember if you said you'd work on this one?

[kkloberdanz]

I was planning on doing this one. I was thinking I would pick it upright after getting some benchmarking numbers, but if we want it sooner, I can certainly prioritize this one.

[mortendahl]

if we want it sooner, I can certainly prioritize this one

Thanks @kkloberdanz. Benchmarking is higher priority!

[kkloberdanz]

https://github.com/tf-encrypted/runtime/pull/938