[PROPOSAL] Export tests into misc formats

[dblock]

What/Why

What are you proposing?

Spec tests are working scenarios demonstrating how to use OpenSearch. Export these into formats that can be used with no changes to be replayed.

• Generic API clients, such as Postman or https://github.com/darrenburns/posting
• Bash scripts that use curl
• Working samples in Python, Java, etc, using the OpenSearch clients

What users have asked for this feature?

• Documentation users that want to copy paste working samples.
• I often find myself wanting to replay a sample with some changes to produce steps for a bug report.

What problems are you trying to solve?

• Make it easy to get end-to-end known working samples.
• Make it easier to report bugs with reusable repro steps.

What is the developer experience going to be?

• Load a suite/postman project.
• Run any Python sample generated from spec.

What is the user experience going to be?

Better docs.

[dblock]

For Postman see https://learning.postman.com/docs/getting-started/importing-and-exporting/importing-and-exporting-overview/#importing-data-into-postman. Would take a PR that generates postman-compatible output that can be loaded directly.