feat(storage): support delete source objects on compose

[nidhiii-27]

Updates compose file sample to support deleting source objects optionally. Fixes b/441557254

[gemini-code-assist]

Code Review

This pull request introduces a new sample script 'storage/composeFile.js' to demonstrate how to combine multiple files into a single destination file using the Google Cloud Storage API, along with corresponding integration tests in 'storage/system-test/files.test.js'. The feedback suggests correcting a copy-paste error in the JSDoc header that references Access Control Lists instead of file composition, and dynamically joining the source file names in the console log messages rather than hardcoding them.

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• storage/composeFile.js:32, tag storage_compose_file

---

This comment is generated by snippet-bot.
If you find problems with this result, please file an issue at:
https://github.com/googleapis/repo-automation-bots/issues.
To update this comment, add snippet-bot:force-run label or use the checkbox below:

• Refresh this comment