Add support for ZMPOP

[dvora-h]

Pull Request check-list

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

• Does $ tox pass with this change (including linting)?
• 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)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

closes #1846

[codecov-commenter]

Codecov Report

Merging #1852 (8a6acc2) into master (15f315a) will increase coverage by 0.05%.
The diff coverage is 95.00%.

@@            Coverage Diff             @@
##           master    #1852      +/-   ##
==========================================
+ Coverage   93.60%   93.65%   +0.05%     
==========================================
  Files          76       76              
  Lines       16214    16288      +74     
==========================================
+ Hits        15177    15255      +78     
+ Misses       1037     1033       -4     

Impacted Files	Coverage Δ
redis/cluster.py	92.42% <ø> (+0.37%)	⬆️
redis/commands/graph/commands.py	84.50% <ø> (ø)
setup.py	0.00% <ø> (ø)
tests/test_cluster.py	98.28% <75.00%> (-0.25%)	⬇️
redis/commands/search/commands.py	89.07% <93.75%> (+0.61%)	⬆️
redis/commands/core.py	90.01% <100.00%> (+0.07%)	⬆️
redis/commands/parser.py	90.32% <100.00%> (+1.61%)	⬆️
redis/connection.py	88.33% <100.00%> (ø)
tests/test_commands.py	99.39% <100.00%> (+<0.01%)	⬆️
tests/test_search.py	99.07% <100.00%> (+0.05%)	⬆️
... and 3 more

---

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[chayim]

@dvora-h

[dvora-h]

Done in #1923