[chore]: update examples to use zip deployment

[zhongkechen]

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Issue Link, if available

Fixes #309

Description

AWS Lambda Java runtime now supports durable functions.

• Updated examples to use zip deployment
• Renamed the stacks and function names to avoid conflicts with existing resources
• Removed dockerfiles and unused function name in CFN outputs

Demo/Screenshots

Checklist

• I have filled out every section of the PR template
• I have thoroughly tested this change

Testing

Unit Tests

Have unit tests been written for these changes? N/A

Integration Tests

Have integration tests been written for these changes? N/A

Examples

Has a new example been added for the change? (if applicable) Updated

[SilanHe]

just to be clear, can you explain how you tested? I assume you tried deploying the examples via your branch?

[zhongkechen]

just to be clear, can you explain how you tested? I assume you tried deploying the examples via your branch?

Yes, deployed to my own account in another region previously. And automated e2e tests have also succeeded because us regions now support it.