Add GET /api/v2/search which returns rich tag objects, adjust web UI (#7661)

app/controllers/api/v2/search_controller.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class Api::V2::SearchController < Api::V1::SearchController
+  def index
+    @search = Search.new(search)
+    render json: @search, serializer: REST::V2::SearchSerializer
+  end
+end