fix: add redis caching

[s0nicboOm]

PR introduces:

1. Adding caching for redis registry (includes code rearrangement)
2. Fix mlflow test cases

[codecov[bot]]

Codecov Report

Merging #179 (05f4463) into main (0f7e6e0) will decrease coverage by 0.08%. The diff coverage is 95.83%.

@@            Coverage Diff             @@
##             main     #179      +/-   ##
==========================================
- Coverage   96.80%   96.73%   -0.08%     
==========================================
  Files          36       36              
  Lines        1503     1530      +27     
  Branches      113      117       +4     
==========================================
+ Hits         1455     1480      +25     
  Misses         36       36              
- Partials       12       14       +2     

Impacted Files	Coverage Δ
numalogic/registry/redis_registry.py	97.61% <95.45%> (-1.42%)	:arrow_down:
numalogic/registry/artifact.py	91.66% <100.00%> (+0.36%)	:arrow_up:
numalogic/registry/localcache.py	94.44% <100.00%> (+0.69%)	:arrow_up:

... and 2 files with indirect coverage changes

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