logger.hpp pulled in <sys/time.h> and used gettimeofday and localtime_r,
which do not exist on MSVC. Build the timestamp from std::chrono instead
and use localtime_s on MSVC. The output format is unchanged: <colour>-
HH:MM:SS.mmm LEVEL: message<reset>. The unused __SHORT_FORM_OF_FILE__
helper now also strips backslash separators. Add logger tests that pin
the timestamp and line format.
closes #394
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
