Maintenance: Add Idempotency Example

[hossambarakat]

Summary

Create an example project to show case Idempotency utility.

Why is this needed?

Show case Idempotency utility.

Which area does this relate to?

No response

Solution

Develop an example application using SAM to show case Idempotency utility functionalities.

Acknowledgment

• This request meets Powertools for AWS Lambda (.NET) Tenets