Add initial support for ingesting and verifying remote quote posts (#34370)

app/serializers/rest/shallow_quote_serializer.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class REST::ShallowQuoteSerializer < REST::BaseQuoteSerializer
+  attribute :quoted_status_id
+
+  def quoted_status_id
+    quoted_status&.id&.to_s
+  end
+end