feat: Add example Go stack for Step Functions

[lym953]

What does this PR do?

Add an example Go stack that creates and instruments a State Machine, which invokes a child State Machine and a Lambda function, with trace merging enabled for both.

Motivation

Testing Guidelines

Deployed the stack, and the step function showed up in Datadog app, including its traces.

Additional Notes

Types of Changes

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

Check all that apply

• [x] 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

[lym953]

/merge

[dd-devflow[bot]]

Devflow running: /merge

View all feedbacks in Devflow UI.

---

2024-11-18 19:39:49 UTC :information_source: MergeQueue: pull request added to the queue

The median merge time in main is 8m.