tools: sort transactions by duration
tools: sort transactions by duration

When analyzing logs, we are interested in the slowest performed transactions.
Thus, sort transactions by their duration.

Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server