Repeat deliveries: Allow user to copy schedule from a previous week

[vanessia]

• Allow user to copy schedule from previous week(s)
• Automatically clear out all statuses (e.g. delivery status and payment status)
• Include a "clear all" button to clear out restaurants

[rmeritz]

I'm going to pick up this issue.

[rmeritz]

Notes from discussion with @boazsender

• Don't let you copy if you are copying over current state
• Only copy on a blank slate
• Don't add a clear all button
• Possibly disable the button or display an error message otherwise maybe tooltip: (https://airtable.com/developers/blocks/api/UI/components/Tooltip) or Dialog
• Copy from previous, but potentially open issue to customize the range