Expose engine argument in dask_cudf.read_json

[rjzamora]

Description

Exposes the engine argument in dask_cudf.read_json, enabling dask_cudf.read_json(... engine="cudf_experimental") for nested json data.

TODO (maybe this PR?):

• (EDIT: This should be done in a separate PR) Add simple/optimized code path to leverage the byte_range parameter for local storage (similar to what is done in dask_cudf.read_csv). This would depend on byte_range support for JSON Lines format #12017 for nested json data.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

Base: 88.05% // Head: 88.08% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (5a1833b) compared to base (7535f31).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 5a1833b differs from pull request most recent head 7bf96b5. Consider uploading reports for the commit 7bf96b5 to get more accurate results

Additional details and impacted files

@@               Coverage Diff                @@
##           branch-22.12   #12101      +/-   ##
================================================
+ Coverage         88.05%   88.08%   +0.02%     
================================================
  Files               135      135              
  Lines             22057    22066       +9     
================================================
+ Hits              19423    19436      +13     
+ Misses             2634     2630       -4     

Impacted Files	Coverage Δ
python/dask_cudf/dask_cudf/backends.py	84.96% <100.00%> (+0.05%)	⬆️
python/dask_cudf/dask_cudf/io/tests/test_json.py	100.00% <100.00%> (ø)
python/strings_udf/strings_udf/__init__.py	84.31% <0.00%> (+7.84%)	⬆️

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[wence-]

Very minor queries. Overall looks good!

[wence-]

Thanks!

[rjzamora]

@gpucibot merge