Spring-ai ResourceReader to get list of documents from a resource

Fix #221

Comment From: Omkar-Shetkar

@markpollack - Please let me know if anything else needs to be done as part of this task. Thanks.

Comment From: markpollack

We would need an implementation of the interface.

Comment From: Omkar-Shetkar

I will come back with new PR on this. Closing this for now.