Make the configuration for StreamTable more generic to support more stream sources #10599

Is your feature request related to a problem or challenge?

I am working on a websocket TableProvider and initially I went about creating my own TableProvider but then after reviewing the StreamTable and StreamConfig it seems it was made with the potential to be generic at some point.

Ref: "Currently only reading from / appending to a single file in-place is supported, but other stream sources and sinks may be added in future."

So I decided to try making a more generic interface for this. As a first step I created the new interface and ported the existing implementation to use this (I will have a PR up shortly). I havent finished cleaning up yet but i think the API is in good enough shape to start getting feedback.

The TLDR of the new interface is that there is a new trait StreamSource which provides the Schema and RecordBatchReader and RecordBatchWriter. Then there are implementations like FileStreamSource or WebsocketStreamSource.

Assuming this is going in the right direction I can cleanup more, get this merged, and then follow on with an implementation of WebsocketStreamSource.

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