FR: Allow manually making a duplicate of a contact

[JohnVeness]

Occasionally I have made a contact then immediately want to make a new one as a duplicate or a copy of that, which I then edit to make slight changes. E.g. when adding more than one person in the same house or in the same company.

Would it be possible to add a feature to do this? E.g. could long-press a contact then choose "open as new" on the overflow menu, or whatever other UI you think suits. Thanks.