Prestashop updates

Need the following changes to our Prestashop:

- activate filters on brand page
- custom-plugin: https://prnt.sc/GKNK1D-MfqRx
- product preview from product-list: https://prnt.sc/-BzY51n5KckY
- product preview from custom plugin: https://prnt.sc/xyBxDmJ9F1uK
- check out process: https://prnt.sc/n9REHzV5Uw3m
- check out process: need to manage link "termini e condizioni"

-------------------------------------

**Very Important -- READ CAREFULLY **

by placing a bid, you accept the following:

- ONLY ACTUAL DEVELOPERS ARE WELCOME. NO REBIDDERS;
- Money released only when the job is COMPLETELY done;
- we have a test site for devs, once everything works, the job is moved to the production site for the final test;
- no PS or Theme core files can be touched, everything needs to be done in override/hooks/child-theme;
- Code gotta be compatible PHP 7.4

Theme: Warehouse (iqit) version 4.4.3
PrestaShop version: 1.7.7.8