Enhance NVSStorageHandler with filtering capabilities and update constructor to accept namespace

main/main.cpp

@@ -50,7 +50,9 @@ void app_main(void) {
       throw std::runtime_error("Failed to create LVGL mutex");
     }
     //
-    KVStorageHandler* kv_storage_handler = new NVSStorageHandler();
+    KVStorageHandler* kv_storage_handler = new NVSStorageHandler(
+      "storage"
+    );
     DisplayHandler* display_handler = new EInkDisplayHandler(touch_event_queue, lvgl_mutex);
     TouchHandler* touch_handler = new EInkTouchHandler(touch_event_queue);
     //