issues/138:: add pytype analysis

[komuw]

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Now,

What(What have you changed?)

• added static analysis support using pytype

Why(Why did you change it?)

• Fixes: add pytype analysis, maybe?  #138

References:

[codecov-io]

Codecov Report

Merging #148 into master will not change coverage.
The diff coverage is 80%.

@@           Coverage Diff           @@
##           master     #148   +/-   ##
=======================================
  Coverage   86.33%   86.33%           
=======================================
  Files          14       14           
  Lines        1295     1295           
=======================================
  Hits         1118     1118           
  Misses        177      177

Impacted Files	Coverage Δ
naz/__version__.py	100% <ø> (ø)	⬆️
naz/hooks.py	79.16% <0%> (ø)	⬆️
naz/logger.py	90.9% <100%> (ø)	⬆️
naz/nazcodec.py	95.6% <100%> (ø)	⬆️
naz/client.py	80.39% <100%> (ø)	⬆️

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