Add --includes and --include-dir to dpnp CLI

[vlad-perevezentsev]

This PR adds --includes and --include-dir options to dpnp CLI (python -m dpnp)

These options return the path to dpnp/backend include directory containing dpnp4pybind11.hpp

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/pull/2916/index.html

[github-actions]

Array API standard conformance tests for dpnp=0.21.0dev0=py313h509198e_35 ran successfully.
Passed: 1356
Failed: 4
Skipped: 16

[coveralls]

coverage: 78.21% (-0.1%) from 78.324% — add_dpnp_cli_options into master

[ndgrigorian]

LGTM