[Feature Request] Ability to show the log for a given number of days or weeks instead of the current day or week.

[chris114782]

When viewing the log, I don't have much use for viewing calendar periods like the current day, week or month, as we typically work in 2 week periods and this usually spans multiple calendar periods.

For example, if I want to see my time over the past 2 weeks on today, 10th May 2023, I have to use watson log --year as --month doesn't show the full period, but that then shows me months of logged work.

It would be great if watson log --day and watson log --week could take a number to show the range, otherwise I have to work out what the date is for the --from argument.

So for example

watson log --day 14 would show the last 14 days worth of logs.

watson log --week 2 would show the same

[kuon]

I think this is a good feature, but I think it could be supported with a more general syntax.

This PR started to implement a new set of syntax: #484

I would extend this PR to also support this:

watson log -f -14d
watson log -f -2w 
watson log -f -14d -t -1d

And it would support more complex duration like this:

1w2d (9 days)
1d6h (1 day 6 hours)

[joelostblom]

I implemented a config option for this in #436 a while back. I don't use watson currently, but I ran that for a few years and it worked well