refactor: controllers and routes

backend/internal/routes/setup.go

@@ -0,0 +1,16 @@
+package routes
+
+import (
+	"easywish/internal/controllers"
+	"github.com/gin-gonic/gin"
+)
+
+func SetupRoutes(r *gin.Engine) *gin.Engine {
+	// Healthcheck routes
+	serviceGroup := r.Group("/service")
+	{
+		serviceGroup.GET("/health", controllers.HealthCheck)
+	}
+	
+	return r
+}