DatePicker Custom Label

[jpfieber]

The current behavior of the datePicker is to display the date in the format in which it is received. For example, if getting the date from frontmatter, it displays the date in the same format as the frontmatter. I propose there should be a way to suggest a different format to display the date in the displayed datePicker (note: this would not change the original date information in the frontmatter).
I'm imagining something like this, where you could use common date formatting to define the output:

```meta-bind
INPUT[datePicker:dashDate, Format: "cccc, MMMM d, yyyy"]
```