Median 1d via sycl kernel

[AlexanderKalistratov]

Draft PR for median implementation.

• sycl kernels added, but cleanup is needed
• kernels are not used in python yet
• tests need to be added

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• Have you checked performance impact of proposed changes?
• Have you added documentation for your changes, if necessary?
• Have you added your changes to the changelog?

[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/pull/2423/index.html

[coveralls]

coverage: 70.513% (-1.8%) from 72.271%
when pulling 7ed9c7e on median
into 4c5970b on master.

[github-actions]

Array API standard conformance tests for dpnp=0.18.0rc1=py312h852cfe9_17 ran successfully.
Passed: 1231
Failed: 0
Skipped: 9