Zapix/48 auth key manager

[Zapix]

closes #48

[codecov]

Codecov Report

Merging #49 (152983e) into dev (d4b95b9) will increase coverage by 0.08%.
The diff coverage is 99.16%.

@@            Coverage Diff             @@
##              dev      #49      +/-   ##
==========================================
+ Coverage   97.50%   97.59%   +0.08%     
==========================================
  Files          91       96       +5     
  Lines        2288     2407     +119     
==========================================
+ Hits         2231     2349     +118     
- Misses         57       58       +1     

Flag	Coverage Δ
unittests	97.59% <99.16%> (+0.08%)	⬆️

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Impacted Files	Coverage Δ
mtpylon/crypto/auth_key.py	93.75% <93.75%> (ø)
mtpylon/crypto/__init__.py	100.00% <100.00%> (ø)
mtpylon/crypto/auth_key_manager.py	100.00% <100.00%> (ø)
mtpylon/crypto/exceptions.py	100.00% <100.00%> (ø)
tests/test_crypto/test_auth_key.py	100.00% <100.00%> (ø)
tests/test_crypto/test_auth_key_manager.py	100.00% <100.00%> (ø)
... and 1 more

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