Add anyOf/oneOf inside a property

[janechu]

What feature are you requesting?

The use of an anyOf/oneOf inside a property, and not just the root level of the schema.

What would be the benefit of adding this feature?

This would allow further flexibility in schema creation as well we the ability to create select dropdowns with a different label than its value which is the default when using an enum. See rjsf-team/react-jsonschema-form#532. the issue with adding another array to the listed items is that it is an addition to JSON schema that was not intended.

example schema with a oneOf:

{
    "type": "object",
    "properties": {
        "strings": {
            "type": "array",
            "items": {
                "oneOf": [
                    {
                        "title": "a",
                        "type": "string",
                    },
                    {
                        "title": "b",
                        "type": "string",
                    }
                ]
            }
        }
    }
}