- Add separate handlers for liveness (/healthz), readiness (/readyz),
and startup (/startupz) probes
- Implement WithLivenessHandler, WithReadinessHandler, WithStartupHandler,
and WithServiceName options
- Add probe-specific JSON response formats
- Add comprehensive package documentation with usage examples
- Maintain backward compatibility for /__health and / endpoints
- Add tests for all probe types and fallback scenarios
Enables proper Kubernetes health monitoring with different probe types.
