Implements log2 and log10

[ndgrigorian]

This PR implements elementwise functions dpctl.tensor.log2, dpctl.tensor.log10, and dpctl.tensor.logaddexp.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/1267/index.html

[coveralls]

coverage: 83.287% (+0.005%) from 83.282% when pulling c90e5d5 on elementwise-functions-log-variants into 7510d7e on master.

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_5 ran successfully.
Passed: 410
Failed: 590
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_5 ran successfully.
Passed: 408
Failed: 592
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_9 ran successfully.
Passed: 415
Failed: 585
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_10 ran successfully.
Passed: 414
Failed: 586
Skipped: 119

[vlad-perevezentsev]

LGTM!
thanks @ndgrigorian

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_16 ran successfully.
Passed: 448
Failed: 552
Skipped: 119

[github-actions]

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

[github-actions]

Array API standard conformance tests for dpctl=0.14.5dev0=py310h7bf5fec_13 ran successfully.
Passed: 449
Failed: 551
Skipped: 119