Add antenna editor page

app/serializers/rest/antenna_serializer.rb

@@ -1,9 +1,35 @@
 # frozen_string_literal: true
 
 class REST::AntennaSerializer < ActiveModel::Serializer
-  attributes :id, :title
+  attributes :id, :title, :stl, :with_media_only, :ignore_reblog, :accounts_count, :domains_count, :tags_count, :keywords_count
+
+  class ListSerializer < ActiveModel::Serializer
+    attributes :id, :title
+
+    def id
+      object.id.to_s
+    end
+  end
+
+  has_one :list, serializer: ListSerializer, optional: true
 
   def id
     object.id.to_s
   end
+
+  def accounts_count
+    object.antenna_accounts.count
+  end
+
+  def domains_count
+    object.antenna_domains.count
+  end
+
+  def tags_count
+    object.antenna_tags.count
+  end
+
+  def keywords_count
+    object.keywords&.size || 0
+  end
 end