Examples: Add a terraform example for core modules

### What were you searching in the docs?

An example for deploying a lambda function with powertools using Terraform

### Is this related to an existing documentation section?

_No response_

### How can we improve?

Create an example

### Got a suggestion in mind?

_No response_

### Acknowledgment

- [X] I understand the final update might be different from my proposed suggestion, or refused.