feat: add root redirect to /health

Author: devSharma31

app/main.py

@@ -1,8 +1,13 @@
-
 from fastapi import FastAPI
+from fastapi.responses import RedirectResponse
 
 app = FastAPI(title="DevOps Starter Kit")
 
+@app.get("/", include_in_schema=False)
+def root():
+    # keep one source of truth for health
+    return RedirectResponse(url="/health", status_code=307)
+
 @app.get("/health")
 def health():
     return {"status": "ok"}