feat: Propagate detailed Kubernetes pod errors to endpoint message

[Vishvajeet590]

Description

This PR improves error visibility for model deployments by propagating detailed Kubernetes pod errors (such as OOMKilled, CrashLoopBackOff, ImagePullBackOff, etc.) to users. Previously, users only saw generic error messages like "predictor is not ready" or "CrashLoopBackOff" in the CaraML dashboard, making it difficult to diagnose deployment failures. With this change, users will see specific pod failure reasons, exit codes, and messages directly in the dashboard, enabling faster troubleshooting.

Modifications

• Enhanced error handling in the deployment flow to include pod termination reason, exit code, and message in the error output.
• Updated the deployment logic to propagate these detailed Kubernetes errors to the VersionEndpoint.Message field.
• Ensured that the CaraML dashboard displays these detailed errors to users for any pod failure during deployment.