base_name_search_improved: can't be configured

[odooNextev]

Module

base_name_search_improved

Describe the bug

We don't find the options in models form described in the configuration section of the readme (https://github.com/OCA/server-tools/tree/16.0/base_name_search_improved#id1).
Instead there is a new top menu item "Smart searches" in Settings App, but it's unusable cause it doesn't allow to set a model in the form.

To Reproduce

Affected versions:

• 16.0

Steps to reproduce the behavior (on runboat):

1. follow configuration section in the readme https://github.com/OCA/server-tools/tree/16.0/base_name_search_improved#id1 and go to Settings > Technical > Database > Models
2. open a model record form and you won't see "Name Search Fields" field

• README:
  
• RUNBOAT:
  

3. you can also open "Smart searches" menu on the top bar of settings
   

4. click on "new"
   

5. model is readonly
   

Expected behavior
I guess configuration section of readme is for older versions and should be updated, but at this point model field should be editable and should let you select a model from a dropdown.