Remove POC of exception support

[vvish]

Configurable error handling and exception support were experimental, and it is currently unclear if these features are necessary. PR #27 contains the primary POC implementation, which can serve as a reference if this topic is revisited.

This PR removes the initial configurable error handling facilities from trunk

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.28%. Comparing base (53abfa0) to head (cbec1e7).
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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
+ Coverage   81.76%   82.28%   +0.51%     
==========================================
  Files           9        8       -1     
  Lines         181      175       -6     
  Branches       27       27              
==========================================
- Hits          148      144       -4     
+ Misses         12       10       -2     
  Partials       21       21              

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