Do not hibernate if backup is in progress

[eminano]

This PR updates the scale to zero sidecar logic to only hibernate a cluster if there are no backups ongoing.

[Copilot]

Pull Request Overview

This PR updates the scale to zero sidecar logic to prevent hibernating clusters when backups are in progress. The changes ensure that the system checks for ongoing backups before deciding to hibernate a cluster, preventing potential data consistency issues.

Key changes:

• Added backup status checking logic to the hibernation decision process
• Registered Backup and BackupList types in the runtime scheme
• Enhanced test coverage for backup-in-progress scenarios

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
internal/sidecar/sidecar.go	Registers Backup types in the runtime scheme for API access
internal/sidecar/scale_to_zero.go	Adds backup progress checking logic and new interface method
internal/sidecar/cluster_client.go	Implements getClusterBackups method to retrieve cluster backups
internal/sidecar/helper_test.go	Updates mock client to support backup status testing
internal/sidecar/scale_to_zero_test.go	Adds comprehensive test cases for backup-in-progress scenarios
doc/examples/cluster-example.yaml	Adds immediate backup configuration example

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