1) Userless orders will be merged on user's registration by their phone number and/or email. Added Viewset action "merge_recently_viewed" so recently viewed products may be stored on server's side.
2) Added comprehensive products' filtering by category(support for including subcategories)
Fixes: I18N
Fixes: 1) Address incorrect scoping for user-based permissions; 2) Correct queryset handling for actions like "list" and "retrieve."
Extra: Refactor permission checks for clarity and maintainability; simplify conditional logic in queryset filters.
Fixes: 1) Ensure 'user' is set to authenticated user in AddressSerializer.create method.
Extra: 1) Refactor EvibesPermission for clarity and comprehensive action handling; 2) Add detailed class-level docstring for EvibesPermission; 3) Simplify queryset filtering logic with USER_SCOPED_ACTIONS and explicit permission checks.
Ensure inactive products without stock are excluded from queries by updating the filter. Add 'buy_unregistered' action to permissions for better access control."
