add fixes

src/main/kotlin/com/restapi/controllers/Entities.kt

@@ -456,6 +456,7 @@ object ProductCtrl {
     fun create(ctx :Context){
         val product = ctx.bodyAsClass<Product>()
         database.save(product)
+        ctx.json(product).status(HttpStatus.CREATED)
     }
 
     fun delete(ctx: Context) {