Add preference to hide following/followers lists (#7532)

* Add preference to hide following/followers lists

- Public pages
- ActivityPub collections (does not return pages but does give total)
- REST API (unless it's your own) (does not federate)

Fix #6901

* Add preference

* Add delegation

* Fix issue

* Fix issue

app/controllers/api/v1/accounts/follower_accounts_controller.rb

@@ -19,6 +19,8 @@ class Api::V1::Accounts::FollowerAccountsController < Api::BaseController
   end
 
   def load_accounts
+    return [] if @account.user_hides_network? && current_account.id != @account.id
+
     default_accounts.merge(paginated_follows).to_a
   end