add recording.time_slice like recording.frame_slice

[h-mayorquin]

Many times when I use spikeinterface I wish had this facility. recording.time_slice() to avoid having to do the conversion myself. This PR adds the functionality and a test.

That said, I am not sure I really like name, any suggestions @zm711, @JoeZiminski?

I am thinking on discoverability.
I think that if the methods started by slice it would be nice to get the auto-completition to either complete it to time or frame but because they are not

Maybe there is a better name?

[zm711]

I don't really see another name. I think frame_slice and time_slice are parsimonious and if someone discovers one it would be easier to discover the other. I think some functions use time_range which is I think is a better name, but then would you want frame_range (which sounds awkward to me....)?

[alejoe91]

I like time_slice too! Thanks for this @h-mayorquin

[h-mayorquin]

All right. Then the name as it is is good.

[samuelgarcia]

merci