dependant property input

[jackyzhang69]

Feature description:
streamlit_pydantic should have capability to handle dependant property.

Problem and motivation:
Sometimes, one property is required only when another property is True, for example:
class General(BaseModel):
legal_name: str
operating_name: Optional[str]
has_lmia_approved: bool
when_lmia_approved: Optional[date]

in streamlit_pydantic, we cannot disappear when_lmia_approved if has_lmia_approved is False.

Is this something you're interested in working on?
Yes.