Implement display options for date & time types

[kgodey]

Problem

The Date & Time Mathesar type supports the following display options:

• Date format
• Time format

We will combine this into one format store.

Solution

(1) We should store these display options in the following format in the display_options field of the corresponding column.

{
  "format": "YYYY-MM-DD hh:mm A",
}

(2) We should also validate these so that:

• Only columns of this type can have these display options. They should not be able to be set if the column is of a different type.
• format should be a valid JavaScript date/time format.
• We should validate format based on the type of the column. DATE columns should only include date formats, TIME column should only include time formats, TIMESTAMP columns can have either or both.

(3) If the column type is changed, the display options should be deleted.

(4) We should add supported display options to the types endpoint.

Additional Context

• Design of Date/Time type options on Figma
• Blocked by Set up Column Django model with support for display options #658
• Spec for implementing display options for Columns #392