Introduce time profiler

[medikoo]

const logTimer = log.startTimer('foo'); // foo[start]
...
logTimer.lap('first round'); // foo[lap] first round +0.13ms
...
logTimer.lap('second round'); // foo[lap] second round +0.10ms (0.23ms total)
...
logTimer.stop('finish'); // foo[end] finish +0.17ms (0.40ms total)

Timing methods should probably be introduced within core of those package. It should be light, and separating this into other extension may raise issues of functionality may be sees as non standard so not supported by all loggers.