PassThrough: component option improvements

[tugcekucukoglu]

Users can render conditional by using the pt properties of the component with options.

Exp;

const CustomPT = {
    button: ({ instance, props, states, context }) => {
       return props.size === 'small' ? { root: 'my-small-button' } : { root: 'my-button' }
    }
    ...
}