Add HealthCheck API route for system status monitoring

We are adding a HealthCheck route to our API, allowing users to check if the API is online and retrieve additional system health insights. This endpoint will help developers monitor uptime, diagnose issues, and get real-time status updates.

🔹 Why?

• Allows users to confirm API availability before making requests.

• Provides key system health metrics to help with debugging.

• Improves developer experience by reducing downtime-related confusion.

• Ensures internal monitoring tools can track API status in real-time.

🔹 How it works?

• Create a /health or /status route in the API.

• Return a JSON response with:

{ "status": "ok", "uptime": 86400, "database": "connected", "elasticsearch": "operational", "requests_last_minute": 120, "api_version": "v1.4.0" }

• Include checks for:

• API uptime

• Database connection status

• Elasticsearch or caching service health

• Recent request volume

• Current API version

• Implement tests to ensure HealthCheck always returns accurate data.

• Document the endpoint in the API documentation, including response examples.

• Optionally, integrate with monitoring tools like Datadog or Prometheus for deeper insights.