fix: CLI dangling task for input_required in stream

[CakeCrusher]

Description

(Branched from #357 for better readability)
Currently whenever you are streaming back messages and an input is required the CLI will get deadlocked for several reasons:

• Tutorial code states that task is done whenever message for INPUT_REQUIRED is sent
• CLI has no means of handling input required for streaming

This PR resolves the problem at the CLI level enabling the CLI to handle INPUT_REQUIRED when streaming. Additionally this PR makes streaming outputs human readbale.

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@ToddSegal