Add modified command

[dotKuro]

This adds the modified command as suggested in #18.

Currently it shows all tasks that were modified sorted by the modified_utc. I'm not sure if only showing open tasks would be better. Also when showing these tasks I think we should add a column showing the modified_utc.

What do you think? I will mark this PR as draft until these points are discussed.

[ad-si]

• I think it's fine to show open and closed tasks. The idea is to have a command to see what you recently worked on, even if it was closing a task.
• A column with the modified UTC would certainly be cool, but this will need some bigger changes. Ideally the table printing code would be modularized to allow any fields to be printed as a table.

Btw: Can you maybe rewrite the code to not use where? I absolutely loathe it and don't want to have it the code. 😅

[dotKuro]

• Should I use let foo in instead?

• If you have any input on how to modularize the table printing well I can try to implement that.

[ad-si]

Should I use let foo in instead?

yes! 👍

If you have any input on how to modularize the table printing well I can try to implement that.

Maybe something in the sprit of this?

buildTable :: [{fieldName :: Text, maxWidth :: Int, color :: Color}] -> [Task] -> Doc

But this could get pretty involved. So not sure if you want to bother with this 😅