No INFO/ERR/WARN/DBUG calls in this files.

The fmt library happily accepts std::string without
any conversions.

Include spdlog via BaseLib/Logging.h, which
provides macro replacements for
ERR/DBUG/WARN/INFO...

There is no requirement for the GeoLib::Point:
 - id is not used
 - name of the geo-object is not used.

The predicate is correct but slower than the homegrown solution.

Clang format run on near-the-header lines.

Happy New Year

See clang-tidy docu https://clang.llvm.org/extra/clang-tidy/checks/readability-simplify-boolean-expr.html

Especially on iterator types and 'new' allocations.

Also slightly clean up the surroundings.