Add support for LCS

[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

Please provide a description of the change here.

[codecov-commenter]

Codecov Report

Merging #1924 (4fe2731) into master (7ea1bf7) will decrease coverage by 0.02%.
The diff coverage is 95.23%.

@@            Coverage Diff             @@
##           master    #1924      +/-   ##
==========================================
- Coverage   93.00%   92.98%   -0.03%     
==========================================
  Files          76       76              
  Lines       16500    16520      +20     
==========================================
+ Hits        15346    15361      +15     
- Misses       1154     1159       +5     

Impacted Files	Coverage Δ
redis/commands/core.py	90.08% <91.66%> (+<0.01%)	⬆️
tests/test_commands.py	99.39% <100.00%> (+<0.01%)	⬆️
tests/test_cluster.py	98.16% <0.00%> (-0.26%)	⬇️

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