feat: add property to update lambda version when lambda layer is updated

[aaythapa]

Issue #, if available

#3648

Description of changes

Added an opt-in property to AWS::Serverless::LayerVersion. When enabled alongside AutoPublishAliasAllProperties in the connected Lambda function there will be a new lambda version created for every change made to the LayerVersion resource

Description of how you validated changes

Created and ran integ test. Integ test changes Description and ContentUri property to ensure a new Lambda version is created.

Checklist

• Adheres to the development guidelines
• Add/update transform tests
  • Using correct values
  • Using wrong values
• Add/update integration tests

Examples?

Please reach out in the comments if you want to add an example. Examples will be
added to sam init through aws/aws-sam-cli-app-templates.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[GavinZZ]

Looks good, really nice integration test. One nit: can you add a unit tests for function with 2 layers, one with the new property true and one undefined. Confirm that changing the undefined property layer wouldn't cause new hash.

[GavinZZ]

LGTM