Start kernel_arg_type enums from 0

[ZzEeKkAa]

Fixes IntelPython/numba-dpex#1379 and #1581 . Other enums must be revisited.

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[github-actions]

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

[coveralls]

coverage: 87.743% (+0.03%) from 87.717%
when pulling 5ef035e on fix/kernel_arg_type
into 545dff2 on master.

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_69 ran successfully.
Passed: 906
Failed: 0
Skipped: 94

[oleksandr-pavlyk]

The change itself seems fine, did you test whether numerical value of enum members in Python actually changed values because of this change? Should tests be added to verify numerical values of different enum members?

[ZzEeKkAa]

I've tested in numba-dpex (that's actually how I've found this issue). Definitely we need to test this and other enums in following PRs.

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_70 ran successfully.
Passed: 906
Failed: 0
Skipped: 94

[oleksandr-pavlyk]

I have pushed a change to reimplement kernel_arg_type class using Cython, to have hard binding with values of enum in C.

This change would drop coverage, and requires adding more tests, feel free to add those, otherwise I'd push changes to add more tests a bit later.

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_71 ran successfully.
Passed: 906
Failed: 0
Skipped: 94

[github-actions]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_72 ran successfully.
Passed: 906
Failed: 0
Skipped: 94

[ZzEeKkAa]

LGTM! Tested localy for dpex - it works!

[diptorupd]

Nice improvements, four years in the waiting!