Update _show,json.jbuilder to include questions and answers

Author: momo3404

app/views/api/v2/plans/_show.json.jbuilder

@@ -57,6 +57,24 @@ unless @minimal
 
   outputs = plan.research_outputs.any? ? plan.research_outputs : [plan]
 
+  if @question_and_answer
+    json.questions_and_answers do
+      outputs.each do |output|
+        presenter = Api::V2::ResearchOutputPresenter.new(output: output)
+        q_and_a = presenter.send(:fetch_all_q_and_a, plan: plan)
+        next if q_and_a.blank?
+
+        json.set! output.id.to_s do
+          json.array! q_and_a do |item|
+            json.title item[:title]
+            json.question item[:question]
+            json.answer item[:answer]
+          end
+        end
+      end
+    end
+  end
+
   json.dataset outputs do |output|
     json.partial! "api/v2/datasets/show", output: output
   end