Add BITFIELD_RO

[bodevone]

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Description of change

Add BITFIELD_RO

Closes #1966

[codecov-commenter]

Codecov Report

Merging #2340 (3d5884d) into master (771109e) will decrease coverage by 13.62%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master    #2340       +/-   ##
===========================================
- Coverage   92.19%   78.56%   -13.63%     
===========================================
  Files         111      111               
  Lines       28751    28776       +25     
===========================================
- Hits        26507    22609     -3898     
- Misses       2244     6167     +3923     

Impacted Files	Coverage Δ
redis/commands/core.py	82.00% <100.00%> (-0.11%)	⬇️
tests/test_asyncio/test_commands.py	98.39% <100.00%> (+<0.01%)	⬆️
tests/test_commands.py	89.71% <100.00%> (-0.10%)	⬇️
tests/test_cluster.py	18.58% <0.00%> (-78.50%)	⬇️
tests/test_asyncio/test_cluster.py	18.88% <0.00%> (-78.40%)	⬇️
redis/asyncio/cluster.py	16.52% <0.00%> (-73.77%)	⬇️
redis/cluster.py	18.81% <0.00%> (-71.04%)	⬇️
redis/asyncio/parser.py	17.30% <0.00%> (-63.47%)	⬇️
redis/commands/cluster.py	37.57% <0.00%> (-56.07%)	⬇️
redis/crc.py	45.45% <0.00%> (-54.55%)	⬇️
... and 27 more

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[chayim]

I realize the documentation is confusing here. But it appears the command is available since 6.0.0, but the help text indicates it's from Redis 6.2

@itamarhaber can you weigh in on which is correct, so that we get this tagged appropriately?

[itamarhaber]

BITFIELD_RO was added in Redis v6.0

[chayim]

Cool thanks! Seems like a doc needs changing in redis-docs In that case, stamped.

[itamarhaber]

I'm not seeing the error in the docs