Multi-Tasks/Quick-Tasks

Sometimes, the items in your Todo are very small, e.g. a shopping list

```
* bread
* butter
* more bread
```

In it's current form I'd have to type `tb -t @shopping bread`, `tb -t @shopping butter` and `tb -t @shopping bread`. How about being able to write `tb -t @shopping bread|butter|more bread`, which could be translated to

```
* bread
* butter
* more bread
```

Thanks

Start at the command-line handling for `tb -t @shopping` and trace how one task argument becomes a Todo item. Done means a pipe-separated argument creates one item per segment under the specified `@shopping` tag, including entries such as `more bread`, while existing single-task input continues to work.

Written by the indexing model from the issue text.