Over-the-top precision in reporting times

[michaelpj]

Describe the bug

When treefmt reports times it seems to report somewhere between 5 and 9 decimal places beyond the seconds. This is silly. I would follow e.g. time and use at most 2 decimal places.

e.g.

INFO format | terraform: 71 files processed in 208.27347ms

vs

INFO format | terraform: 71 files processed in 208.27ms

Even better, use 2 decimal places when reporting seconds, and 0 decimal places when reporting ms (nobody cares about the microseconds!).