Sync APIs from karmada repo based on v1.15.0

[RainbowMango]

This PR syncs APIs from karmada-io/karmada release v1.15.0.

[karmada-bot]

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[gemini-code-assist]

Summary of Changes

Hello @RainbowMango, 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 updates the API definitions to align with the v1.15.0 release of the karmada-io/karmada project. The changes primarily enhance the system's ability to manage complex, multi-component applications by providing granular control over resource interpretation and binding. Additionally, it improves cluster API compatibility checks, refines failover strategies, and introduces network proxy support for external resource downloads, alongside routine dependency upgrades.

Highlights

• API Synchronization: Synchronized APIs from karmada-io/karmada v1.15.0, ensuring compatibility with the latest upstream changes.
• Multi-Component Workload Support: Introduced new API fields and interpretation logic to support workloads with multiple pod templates (e.g., FlinkDeployment), allowing for component-specific resource requirements and scheduling.
• Cluster API Enablement Check: Added a new function to determine if a specific Kubernetes API (GroupVersionKind) is enabled on a cluster, improving visibility into cluster capabilities.
• Failover Behavior Enhancements: Refined PurgeMode options for failover with clearer terminology (Directly, Gracefully) and added configuration for cluster-level failover behavior, including state preservation.
• CRD Download Proxy Support: Enabled proxy configuration for downloading CRD tarballs via HTTP/HTTPS, facilitating deployments in restricted network environments.
• Dependency Updates: Updated Go version to 1.24.6 and Kubernetes dependencies (k8s.io/api, apiextensions-apiserver, apimachinery) to v0.33.2, along with sigs.k8s.io/controller-runtime to v0.21.0.

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[gemini-code-assist]

Code Review

This pull request syncs APIs from Karmada v1.15.0, introducing several enhancements and new features. Key changes include updating Go and Kubernetes dependencies, adding support for multi-component workloads through new API fields and interpreter operations, and enabling proxy configuration for downloading CRD tarballs. Additionally, failover behavior has been refined with new purge modes and the activation of cluster-level failover configuration. The code is generally well-structured and the changes are clearly documented. I have one minor suggestion regarding API consistency in a newly added struct.