Add a custom map implementation

[shashankrnr32]

No description provided.

[codecov]

Codecov Report

Patch coverage: 75.53% and project coverage change: +12.22 🎉

Comparison is base (163d926) 56.63% compared to head (47bda4b) 68.86%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main       #6       +/-   ##
===========================================
+ Coverage   56.63%   68.86%   +12.22%     
===========================================
  Files          28       30        +2     
  Lines         791      880       +89     
  Branches       59       68        +9     
===========================================
+ Hits          448      606      +158     
+ Misses        341      270       -71     
- Partials        2        4        +2     

Impacted Files	Coverage Δ
pycommons/base/function/consumer.py	57.44% <66.66%> (-0.45%)	⬇️
pycommons/base/function/function.py	81.81% <71.42%> (+17.11%)	⬆️
pycommons/base/maps/maps.py	76.71% <76.71%> (ø)
pycommons/base/maps/__init__.py	100.00% <100.00%> (ø)

... and 4 files with indirect coverage changes

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