stateless examples

[prabu-ssb]

1. The *Stateless files correspond to "purely presentational" implementation, and this is the best case scenario for a component library (this is also the pattern most react libraries that go hand in hand with design systems are written).
2. The *UpdateOnValueChange files correspond to an implementation where the components might continue have internal state but explicitly update the internal state whenever the calling-application provides a new prop value (which is currently being ignored, and quite against typical React principles).
3. Retain the semantics of event handlers: namely, in handleChange = e => {} , pass the event as is through to the handler provided by the application.