[BEAM-12429] Add support for S3 Bucket Key at the object level

[aromanenko-dev]

Add support for S3 Bucket Key at the object level.
See for details:
https://docs.aws.amazon.com/AmazonS3/latest/userguide/configuring-bucket-key-object.html

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ValidatesRunner compliance status (on master branch)

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Examples testing status on various runners

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Post-Commit SDK/Transform Integration Tests Status (on master branch)

Go	Java	Python

Pre-Commit Tests Status (on master branch)

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GitHub Actions Tests Status (on master branch)

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[RyanSkraba]

LGTM -- exposing this option is useful and the implementation follows the pattern for the other SSE parameters