feat: pass S3ObjectStorageMode through from CodeUri and ContentUri

[antespajic]

Issue #, if available

N/A

Description of changes

Pass StorageMode through the SAM transform from CodeUri on AWS::Serverless::Function and ContentUri on AWS::Serverless::LayerVersion to the generated CloudFormation S3ObjectStorageMode property.

Update the SAM and CloudFormation schemas and add transform coverage for both COPY and REFERENCE.

Description of how you validated changes

• pytest -q tests/translator/test_translator.py -k s3_object_storage_mode --no-cov
• pytest -q tests/schema/test_validate_schema.py --no-cov
• pytest -q tests/model/s3_utils/test_uri_parser.py --no-cov
• make format-check
• ruff check samtranslator/internal/schema_source/aws_serverless_function.py samtranslator/internal/schema_source/aws_serverless_layerversion.py samtranslator/model/s3_utils/uri_parser.py

Checklist

• Review the generative AI contribution guidelines
• Adheres to the development guidelines
• Add/update transform tests
  • Using correct values
  • Using wrong values (not applicable: SAM passes the property through and CloudFormation validates accepted values)
• Add/update integration tests (not applicable: translation-only pass-through)

Examples?

Not applicable.

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