Recalculate aliases for selected items

Hello.
Some time ago Georgios added useful function "Recalculate item aliases".


How do I use it?
I add hundreds of new items. Then, using the translate tool, I create new items in other languages. Next, using the Deepl API and my script, I translate the titles of the items. This is where I need the Recalculate Aliases tool. But it works with all the items on the site, and I have tens of thousands of them. This puts a heavy load on the server and makes it unavailable during the operation.
We need the same tool that will do the same thing, but only for selected items.
We made some adjustments and added a button to solve this problem.



So, please, add this edits and commit them.
Paths for replacing files:
/admin/controllers/items.raw.php
/admin/views/items/view.html.php
/admin/views/items/tmpl/indexer.php

These three files are attached to this post.

 
 

hello
thanks for your propose
please fork and propose a pr it can be better for code review