Add federation support for the "hide network" preference (#11673)

* Change ActivityPub follower/following collections to not link first page

* Add support for hiding followers and following of remote users

* Switch to using a single `hide_collections` column

* Address code style remarks

app/models/account.rb

@@ -46,6 +46,7 @@
 #  silenced_at             :datetime
 #  suspended_at            :datetime
 #  trust_level             :integer
+#  hide_collections        :boolean
 #
 
 class Account < ApplicationRecord
@@ -323,6 +324,14 @@ class Account < ApplicationRecord
     save!
   end
 
+  def hides_followers?
+    hide_collections? || user_hides_network?
+  end
+
+  def hides_following?
+    hide_collections? || user_hides_network?
+  end
+
   def object_type
     :person
   end