MAINT: refactoring lazyval + silence a few warnings

[MBounouar]

It didn't make sense to leave the caching decorator lazyval as a dependency from the calendars package.
-Copied lazyval to memoize.py
-Silence a few warnings from pandas, numpy and distutils (moving to packaging)

[codecov]

Codecov Report

Merging #90 (cae93c5) into main (7467eb0) will increase coverage by 0.00%.
The diff coverage is 85.18%.

@@           Coverage Diff           @@
##             main      #90   +/-   ##
=======================================
  Coverage   87.31%   87.32%           
=======================================
  Files         172      172           
  Lines       16416    16436   +20     
=======================================
+ Hits        14334    14353   +19     
- Misses       2082     2083    +1     

Impacted Files	Coverage Δ
src/zipline/utils/calendar_utils.py	78.94% <ø> (+1.44%)	⬆️
src/zipline/utils/numpy_utils.py	85.03% <60.00%> (ø)
src/zipline/__init__.py	54.23% <66.66%> (ø)
src/zipline/utils/memoize.py	80.36% <85.29%> (+1.20%)	⬆️
src/zipline/pipeline/factors/basic.py	96.58% <100.00%> (+0.02%)	⬆️
src/zipline/pipeline/factors/factor.py	98.32% <100.00%> (+<0.01%)	⬆️
src/zipline/utils/events.py	93.57% <100.00%> (ø)
src/zipline/utils/pandas_utils.py	74.00% <100.00%> (ø)

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