Allow copying/duplication of a task?

As the title says, is there some built-in support for this that I can't find?
Maybe it could be a feature suggestion if not?

My use case: while packing for traveling, I like to bring spares/duplicates. So right now I'd love the ability to maybe long press a task, and get an option to duplicate, where I can edit wording/tags to e.g. separate hand luggage from baggage.

The issue does not name files, tests, or entry points. Start by locating the task creation and editing flows, then trace how a long press is handled; done means a task can be duplicated and its wording and tags edited before saving.

Written by the indexing model from the issue text.