Please add support for `format` keyword

[paulmillar]

I have a schema with entries like:

"properties": {
    "acquisition_date": {
        "description": "Date of the measurement or calculation",
        "format": "date",
        "type": "string"
    },

When I select the COMPILE button, the following error is presented:

Error: unknown format "date" ignored in schema at path "#/properties/acquisition_date"

Removing all format keywords allows the JSON Schema to be compiled to a data entry page, but this lacks the restriction that the input is a date.

It would be helpful if Adamant added support for the keyword format.