Lint with ruff

[jschlyter]

Lots of small fixed to please ruff. All of them makes sense and helps us write better code.

closes #162

[jschlyter]

WIP, ping @rohe for a heads up

[codecov]

Codecov Report

Attention: Patch coverage is 58.84956% with 93 lines in your changes missing coverage. Please review.

Project coverage is 76.62%. Comparing base (f94b929) to head (16ffca5).
Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
src/cryptojwt/key_bundle.py	50.00%	11 Missing and 1 partial ⚠️
src/cryptojwt/tools/jwtpeek.py	0.00%	11 Missing ⚠️
src/cryptojwt/jwk/okp.py	0.00%	8 Missing ⚠️
src/cryptojwt/jwk/ec.py	16.66%	5 Missing ⚠️
src/cryptojwt/jws/jws.py	72.22%	5 Missing ⚠️
src/cryptojwt/jwe/jwe_ec.py	63.63%	4 Missing ⚠️
src/cryptojwt/jwk/hmac.py	33.33%	4 Missing ⚠️
src/cryptojwt/key_jar.py	75.00%	3 Missing and 1 partial ⚠️
src/cryptojwt/jwk/x509.py	0.00%	3 Missing ⚠️
src/cryptojwt/jws/dsa.py	0.00%	3 Missing ⚠️
... and 20 more

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #163   +/-   ##
=======================================
  Coverage   76.62%   76.62%           
=======================================
  Files          44       44           
  Lines        4634     4634           
  Branches      993      993           
=======================================
  Hits         3551     3551           
  Misses        788      788           
  Partials      295      295           

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[jschlyter]

ping @rohe