Print Honeycomb traces for KCL

[adamchalmers]

Add a --show-trace flag for KCL commands, which prints the Honeycomb trace URL for the API requests used to execute the KCL.

[codecov]

Codecov Report

Attention: Patch coverage is 69.23077% with 16 lines in your changes missing coverage. Please review.

Project coverage is 77.65%. Comparing base (32755db) to head (76744c6).
Report is 2 commits behind head on main.

Files	Patch %	Lines
src/cmd_kcl.rs	66.66%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #846      +/-   ##
==========================================
- Coverage   77.74%   77.65%   -0.09%     
==========================================
  Files          36       36              
  Lines        7769     7806      +37     
==========================================
+ Hits         6040     6062      +22     
- Misses       1729     1744      +15     

Flag	Coverage Δ
unittests	77.65% <69.23%> (-0.09%)	⬇️

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