Submit metric for DynamoDB Stream Type

[nhulston]

What does this PR do?

Submits a metric for DynamoDB stream type, that we can later query on metabase.

The type of stream will be identified via a tag on the metric:

• streamtype:new_and_old_images
• streamtype:new_image
• streamtype:old_image
• streamtype:keys_only

Motivation

Get insights on what stream setting customers are using to come up with a decision regarding: https://docs.google.com/document/d/1phVoU-XtzxjVmECNz3JOC6SJv5GtGj4lbjwXyCv-VUs/edit?tab=t.0#heading=h.ety0x21ybvdr

Testing Guidelines

Manual

and integration tests

Additional Notes

PRs to allow us to query on metabase:
https://github.com/DataDog/consul-config/pull/292757
https://github.com/DataDog/consul-config/pull/292758

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• This PR impacts documentation, and it has been updated (or a ticket has been logged)
• This PR's changes are covered by the automated tests
• This PR collects user input/sensitive content into Datadog
• This PR passes the integration tests (ask a Datadog member to run the tests)