Feature/support header parameters

[emann]

Closes #117 and closes #146

[codecov]

Codecov Report

Merging #148 into main will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #148   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           41        41           
  Lines         1178      1184    +6     
=========================================
+ Hits          1178      1184    +6     

Impacted Files	Coverage Δ
openapi_python_client/__init__.py	100.00% <100.00%> (ø)
openapi_python_client/parser/openapi.py	100.00% <100.00%> (ø)
openapi_python_client/utils.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c0d101b...5867747. Read the comment docs.

[dbanty]

Looks good, if you can make oge based on the tasks it's chaining rather than redoing the commands. That way if we change the way one of them works we can just change it in one place.