[docs]: port examples from lambda docs

### URL/Location

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### Describe What's Incorrect or Lacking

From https://preview.docs.aws.dev/preview/tgaigher/IAD/AWSLambdaDocs/durable-sdk-site-crosslinks/lambda/latest/dg/durable-examples.html

Port these coding examples over to new section under Patterns: https://docs.aws.amazon.com/durable-execution/patterns/

Either examples, or something more task/concept orientated.

### Suggested Improvement

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### Additional Context

_No response_