Spring-ai Add JSON type detection to handle both arrays and objects

• Handle both JSON arrays and Objects
• Type checking for JSON using JsonNode
• Utilize Stream API to process JSON arrays

I am considering the following for future improvements as below.

• Looking at how other open source Json readers are using it (e.g. springboot JsonReader), and referencing it.
• Modify the constructor to make the ObjectMapper a bit more flexible. Allow users to create any object they want.

issue link * #749

close #749

Comment From: markpollack

Thanks for the contribution, will review after we release M1, moving this to M2.

Comment From: markpollack

thanks to the both of you, I've merged it in 1d6cce2419a1621f393906765a838c304bfb9b80