Avoid sycl::queue copying in libtensor

[oleksandr-pavlyk]

Changed signatures functions to take sycl::queue argument by reference, not by value.

Since sycl::queue contains a shared pointer inside, copying it involves operating atomic variable, and hence should be avoided if possible.

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[github-actions[bot]]

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

[github-actions[bot]]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_296 ran successfully. Passed: 870 Failed: 8 Skipped: 92

[coveralls]

coverage: 88.049%. remained the same when pulling ffe13ea4ea021d61afb237755a672762e4192c1b on change-signatures-to-use-queue-ref into 182aedea00b5a5e81bb0f4d81983387f5094b7cf on master.