Javascript (v3): Bedrock Runtime Agent - added Invoke Flow

[danielgolub]

This pull request contains an example with @aws-sdk/client-bedrock-agent-runtime used to invoke an Prompt Flow. I have included a test case for the service function.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[danielgolub]

this should resolve the issue #6731

[cpyle0819]

Hey @danielgolub, thanks for the submission. We're reviewing and will get back to you.

[cpyle0819]

We've gotten this assigned. Waiting on availability.

[DennisTraub]

This pull request has been replaced with #6991