Add function calling and device controls to the simple chatbot example

[mattieruth]

Please describe the changes in your PR. If it is addressing an issue, please reference that as well.

[codecov[bot]]

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:white_check_mark: All modified and coverable lines are covered by tests.

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[markbackman]

@mattieruth is this PR still relevant?

[mattieruth]

yes, and no. i've folded it into my client-v2 PR as i've been using the functionality in my testing. I'll close this one.