Feature: Parallel SHA-256

### Describe what you are looking for

I’m generally not a fan of reimplementing trivial broadly supported functionality wrapping one native Assembly instruction, but SHA256 is so widespread that extending our dynamic dispatch mechanism can be a value added to the community.

Please let me know if your application needs SHA256 and if you are open to contribute. That set if kernels will go to a separate header file.

### Can you contribute to the implementation?

- [x] I can contribute

### Is your feature request specific to a certain interface?

It applies to everything

### Contact Details

_No response_

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct