Make Boost.Stacktrace optional

[laurynas-biveinis]

Some platforms have an older Boost version without Boost.Stacktrace component.
Accommodate them by adding a CMake check and using it only conditionally.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.32%. Comparing base (c9f895f) to head (6a80242).
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #603      +/-   ##
==========================================
- Coverage   99.35%   99.32%   -0.03%     
==========================================
  Files          31       31              
  Lines        4326     4326              
==========================================
- Hits         4298     4297       -1     
- Misses         28       29       +1     

Flag	Coverage Δ
Debug	99.32% <ø> (+0.02%)	⬆️
Release	98.63% <ø> (-0.09%)	⬇️

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