Avoid needless copies

[oleksandr-pavlyk]

This PR applies code changes to address Coverity's change COPY_INSTEAD_OF_MOVE issue. There are 10923 issues of type COPY_INSTEAD_OF_MOVE in main branch.

This branch reduces that number down to 8378. Remaining issues are outside of dpctl source base (mostly in DPC++ code).

• 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]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/1421/index.html

[coveralls]

coverage: 85.777% (+0.003%) from 85.774% when pulling 15f9320 on avoid-needless-copy into 8de5201 on master.

[github-actions]

Array API standard conformance tests for dpctl=0.15.0rc2=py310ha25a700_21 ran successfully.
Passed: 916
Failed: 84
Skipped: 119

[ndgrigorian]

This LGTM, thank you @oleksandr-pavlyk