Pydanticforms basic: Nested/Object field

[DutchBen]

Add a field that will be used in the pydantic form ui basic version that uses allows the collection of an object. Each object property will be one of the other types and render according to it's type.

eg. Contactpeson { name: {type: string}, age: {type: number}

Could use frontend validation based on: https://json-schema.org/understanding-json-schema/reference/object