Add search box to OTree when inside Product List

-- HikaShop version -- : 3.0
-- HikaMarket version -- : 1.7.3
-- Joomla version -- : 3.6.5

The search box is a very valuable feature of the OTree inside the Product Edition Form.

How can be this feature activated to OTree in the Product List view? Otherwise rich diversitiy categories systems are really hard to handle.

Yes. This is.

When a Shops has about 400 different categories and a HikaMarket user does random maintenance of products it gets very unpleasant and unefficient to travel through categories with the mouse scroller and most people doesn't know the trick of using Ctrl+F to jump through the browser finder.