Issue Description:

The JSONMessageStreamingParser in swift-tools-support-core can overflow the stack with large inputs, due to the fact that the parseImpl method is recursive. This can occur with as little as ~3MB of streaming JSON text.

This should be easily reproducible by constructing a JSONMessageStreamingParser and feeding it a large amount of input in a single call to parse().

Clients may pre-split the input on newline (if possible), as a workaround for the overflow.

https://github.com/apple/swift-tools-support-core/blob/main/Sources/TSCUtility/JSONMessageStreamingParser.swift