fix: JernArc detect and modify global/local tangent directions as appropriate

[jdegenstein]

Resolves #1225 and resolves #997

I have added one additional test case derived from issue #1225

Essentially what this PR does is introduce different logic to check if a tuple of length 2 (i.e. a 2-tuple) is supplied to JernArc as a tangent direction. If so it applies a transformation to this tangent direction to put it into the global coordinate system. If a 3-tuple or Vector is supplied this transformation is skipped as it is assumed these are already in the global coordinate system.

More context for this is also available in an older PR here #644

cc @jwagenet

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.44%. Comparing base (42cfc16) to head (9dc6409).
⚠️ Report is 5 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1226   +/-   ##
=======================================
  Coverage   95.43%   95.44%           
=======================================
  Files          34       34           
  Lines       11549    11551    +2     
=======================================
+ Hits        11022    11025    +3     
+ Misses        527      526    -1     

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