Feat(storage): add bucket encryption enforcement

[thiyaguk09]

Adds metadata support for the following encryption enforcement fields:

• googleManagedEncryptionEnforcementConfig
• customerManagedEncryptionEnforcementConfig
• customerSuppliedEncryptionEnforcementConfig

[gemini-code-assist]

Summary of Changes

Hello @thiyaguk09, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances Google Cloud Storage bucket management by introducing robust capabilities for encryption enforcement. It provides users with the tools to programmatically define, inspect, and reset encryption policies across various key management types, thereby strengthening data security and compliance within their storage infrastructure.

Highlights

• New Encryption Enforcement Configuration Retrieval: Added a new function get_bucket_encryption_enforcement_config to retrieve and display the current encryption enforcement settings for a given Google Cloud Storage bucket, including details for Google Managed, Customer Managed, and Customer Supplied Encryption.
• New Encryption Enforcement Configuration Setting: Implemented a new function set_bucket_encryption_enforcement_config that allows configuring a bucket to enforce specific encryption types, such as requiring Customer Managed Encryption Keys (CMEK) while restricting others.
• New Encryption Enforcement Configuration Removal: Introduced a new function remove_all_bucket_encryption_enforcement_config to clear all encryption enforcement configurations from a bucket, effectively reverting to default behavior.
• Comprehensive Test Coverage: Added dedicated unit tests to validate the functionality of setting, retrieving, and removing bucket encryption enforcement configurations, ensuring reliability and correctness.

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Changelog

• storage/src/get_bucket_encryption_enforcement_config.php
  • Added new file for retrieving bucket encryption enforcement configurations.
• storage/src/remove_all_bucket_encryption_enforcement_config.php
  • Added new file for removing all bucket encryption enforcement configurations.
• storage/src/set_bucket_encryption_enforcement_config.php
  • Added new file for setting bucket encryption enforcement configurations.
• storage/test/storageTest.php
  • Added testSetBucketEncryptionEnforcementConfig to verify setting encryption enforcement.
  • Added testGetBucketEncryptionEnforcementConfig to verify retrieving encryption enforcement.
  • Added testRemoveAllBucketEncryptionEnforcementConfig to verify removing all encryption enforcement.

Activity

• The pull request was created by thiyaguk09, introducing new features for Google Cloud Storage bucket encryption enforcement.

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[gemini-code-assist]

Code Review

This pull request adds functionality to manage bucket encryption enforcement configurations, including setting, getting, and removing them. The changes are well-implemented and include corresponding tests. My review includes a suggestion to improve the robustness of the new tests to ensure they correctly validate the behavior.