add: system notification history api

app/controllers/users/system_notification_histories_controller.rb

@@ -0,0 +1,15 @@
+class Users::SystemNotificationHistoriesController < Users::BaseController 
+  before_action :private_user_resources!, only: [:create]
+  def create 
+    @history = observed_user.system_notification_histories.new(system_notification_id: params[:system_notification_id])
+    if @history.save
+      render_ok
+    else 
+      Rails.logger.info @history.errors.as_json
+      render_error(@history.errors.full_messages.join(","))
+    end
+  rescue Exception => e
+    uid_logger_error(e.message)
+    tip_exception(e.message)
+  end
+end