Add emoji_reactions property to status api object

app/serializers/rest/emoji_reactions_grouped_by_name_serializer.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+#   name: string,
+#count: number,
+#account_ids: Array<string>,
+#me: boolean,
+#url: string,
+#domain: string
+
+class REST::EmojiReactionsGroupedByNameSerializer < ActiveModel::Serializer
+    attributes :name, :count
+  
+    attribute :me, if: :current_user?
+    attribute :url, if: :custom_emoji?
+    attribute :static_url, if: :custom_emoji?
+    attribute :domain, if: :custom_emoji?
+    attribute :account_ids, if: :has_account_ids?
+
+    def current_user?
+        !current_user.nil?
+    end
+
+    def custom_emoji?
+        object.respond_to?(:custom_emoji)
+    end
+
+    def has_account_ids?
+        object.respond_to?(:account_ids)
+    end
+end
+