Technical debt changes

[oleksandr-pavlyk]

This PR checks in changes made during development work:

1. Use const reference for CIndexer_vector and CIndexer_array methods for container arguments
2. Handle possible USM-host allocation failure in "clip.hpp"

• 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?
• If this PR is a work in progress, are you opening the PR as a draft?

[github-actions]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. 🤞

[coveralls]

coverage: 87.449%. remained the same
when pulling b030a79 on technical-debt-changes
into 786f7fc on master.

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_59 ran successfully.
Passed: 906
Failed: 0
Skipped: 94

[ndgrigorian]

where.cpp was also missing handling for USM-host allocation error for strides. I've pushed it in a commit.

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_60 ran successfully.
Passed: 906
Failed: 0
Skipped: 94