Command Duration: Show decimals for seconds instead of rendering millis separately

[LionC]

Feature Request

Describe the solution you'd like

Allow the cmd_duration module to show milis as fractional seconds instead of their own component,

Examples:

1.3s
15.7s
1m10.2s
0.4s

I actually expected this to happen when turning the show_milliseconds option on.

This is especially useful for commands that take <9s, where the difference between e.g. 2.9s and 2.1s is significant, but hard to scan when rendered as 2s900ms vs 2s100ms.

Considerations:

• Should the precision rendered be configurable?
• Should this (optionally) be turned off automatically for durations of >1min

I would be happy to implement this. If i followed the code path correctly, the render_time function responsible to do that is used by the aws module as well, so the feature could be exposed there as well if it makes sense.

EDIT:

Also noticed another possible inconsistency, opened a separate issue for it

[LionC]

Closed for more general solution