Added a searching progress bar! (Patreon)

I realized that the current looting are just go to find some storage, and the ui will straight open to show you what's inside.

Therefore, i added a searching progress bar when you first trying to open some item storage. The required time for searching are around 1s to 3s. It is not much time but i think it can add a bit excitement due to the waiting. It will auto-open the storage UI once the searching is completed.

What do you think about this changes? :3