fix: create new copy of array while retrieving from payload

[ab93]

• update pynumaflow usage for new datatypes
• add ruff linter
• remove pyflake8
• add precommit

[codecov-commenter]

Codecov Report

Merging #148 (9ee4571) into main (d34cf73) will decrease coverage by 0.01%. The diff coverage is 95.65%.

@@            Coverage Diff             @@
##             main     #148      +/-   ##
==========================================
- Coverage   82.27%   82.26%   -0.01%     
==========================================
  Files          20       20              
  Lines        1145     1139       -6     
  Branches      120      120              
==========================================
- Hits          942      937       -5     
+ Misses        180      179       -1     
  Partials       23       23              

Impacted Files	Coverage Δ
numaprom/clients/redis.py	0.00% <0.00%> (ø)
numaprom/udf/inference.py	92.75% <ø> (ø)
numaprom/udf/postprocess.py	95.40% <ø> (ø)
numaprom/udf/preprocess.py	90.00% <ø> (ø)
numaprom/udf/threshold.py	92.18% <ø> (ø)
numaprom/udsink/train_rollout.py	85.12% <ø> (ø)
numaprom/clients/prometheus.py	71.23% <100.00%> (-0.39%)	:arrow_down:
numaprom/clients/sentinel.py	78.26% <100.00%> (-0.91%)	:arrow_down:
numaprom/entities.py	95.60% <100.00%> (ø)
numaprom/factory.py	92.00% <100.00%> (ø)
... and 3 more

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