- Introduce `boost.stacktrace_dump` module for safe_dump interface
- Introduce `boost.stacktrace_<backend>` module for each unwind/collect implementation method
- Introduce `boost.stacktrace` module exposing best available backend implementation
Also many tests was added for checking all available backend build and also header only library version
Moreover, there are some checks for `Boost::stacktrace_<backend>` and `Boost::stacktrace_from_exception` compatibility
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Co-authored-by: Fedor Osetrov <fdr400@Fedors-MacBook-Pro.local>