Add ndarray subclassing support via ndarray.view() method

[antonwolfy]

The PR adds ndarray subclassing support via ndarray.view() method.

It implements the type parameter in dpnp.ndarray.view() to enable custom subclasses, matching NumPy/CuPy behavior. Also includes proper __array_finalize__ hook invocation for metadata propagation.

The implementation is done through _view_impl() helper using 'array_class' parameter to avoid shadowing builtin 'type'.
The tests scope is extended with new 7 tests for verifying subclassing support and enabling TestSubclassArrayView class from third party tests.

This PR closes #2764.

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[github-actions]

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

[github-actions]

Array API standard conformance tests for dpnp=0.20.0dev4=py313h509198e_19 ran successfully.
Passed: 1354
Failed: 3
Skipped: 16

[coveralls]

coverage: 81.977% (+0.02%) from 81.962%
when pulling 8fe24a3 on resolve-gh-2764
into c8c0f88 on master.

[vlad-perevezentsev]

No comments from my side
LGTM
Thank you @antonwolfy