Replace hiredis dependency with libvalkey

[mkmkme]

NOTE: This PR should not be merged until libvalkey-py is moved into valkey-io and the first version of libvalkey-py is released to PyPI!

Pull Request check-list

Please make sure to review and check all of these items:

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

NOTE: these things are not required to open a PR and can be done
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Description of change

This changeset changes hiredis dependency with libvalkey.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.31250% with 6 lines in your changes missing coverage. Please review.

Project coverage is 75.02%. Comparing base (652669c) to head (51d3416).

Files	Patch %	Lines
tests/test_asyncio/test_search.py	33.33%	2 Missing ⚠️
valkey/_parsers/libvalkey.py	84.61%	2 Missing ⚠️
tests/test_search.py	50.00%	1 Missing ⚠️
tests/test_timeseries.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #32      +/-   ##
==========================================
+ Coverage   75.01%   75.02%   +0.01%     
==========================================
  Files         132      132              
  Lines       34367    34341      -26     
==========================================
- Hits        25782    25766      -16     
+ Misses       8585     8575      -10     

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[mkmkme]

converted to draft until PyPI package for libvalkey-py is published

[kjaymiller]

@mkmkme - I see that both of the constraints you mentioned should be completed now (libvalkey and libvalkey-py are in the valkey org and libvalkey-py has been published to pypi)

[mkmkme]

@kjaymiller I still haven't enabled the breaking changes yet, they are behind the flag in libvalkey.Reader. When I turn them on, the RESP3 tests start failing. Now I need to fix them, and then this is good to go :)

[mkmkme]

@kjaymiller JFYI the release I've done was not good enough. I have to release a new one.

[mkmkme]

The tests are failing. I know the reason and investigating it

[mkmkme]

@aiven-sal @ahmedsobeh all tests are green and invoke cluster-tests -c --protocol=3 --uvloop run locally passed as well.

Shall we remove the RESP3 libvalkey cluster exclusion as per https://github.com/valkey-io/valkey-py/pull/55/files or will we do this separately?

[ahmedsobeh]

@aiven-sal @ahmedsobeh all tests are green and invoke cluster-tests -c --protocol=3 --uvloop run locally passed as well.

Shall we remove the RESP3 libvalkey cluster exclusion as per https://github.com/valkey-io/valkey-py/pull/55/files or will we do this separately?

There is already a PR for it: #55

[aiven-sal]

Thank you!