Add support for TDIGEST.QUANTILE extensions

[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)?
• Was the change added to CHANGES file?

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Description of change

closes #2197

[codecov-commenter]

Codecov Report

Merging #2317 (4dd1cd4) into master (fd9fea6) will increase coverage by 0.02%.
The diff coverage is 97.36%.

@@            Coverage Diff             @@
##           master    #2317      +/-   ##
==========================================
+ Coverage   92.13%   92.15%   +0.02%     
==========================================
  Files         110      111       +1     
  Lines       28650    28659       +9     
==========================================
+ Hits        26397    26412      +15     
+ Misses       2253     2247       -6     

Impacted Files	Coverage Δ
redis/commands/core.py	82.11% <83.33%> (-0.01%)	⬇️
redis/commands/bf/__init__.py	100.00% <100.00%> (ø)
redis/commands/bf/commands.py	98.86% <100.00%> (ø)
redis/commands/bf/utils.py	100.00% <100.00%> (ø)
tests/test_asyncio/test_bloom.py	99.55% <100.00%> (+0.01%)	⬆️
tests/test_asyncio/test_commands.py	98.38% <100.00%> (-0.01%)	⬇️
tests/test_bloom.py	99.57% <100.00%> (+0.01%)	⬆️
tests/test_commands.py	89.81% <100.00%> (ø)
redis/asyncio/connection.py	86.11% <0.00%> (+0.11%)	⬆️
tests/test_cluster.py	96.96% <0.00%> (+0.11%)	⬆️
... and 1 more

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