feat: event 연구 커맨드 추가

hwe/sammo/Command/Nation/event_산저병연구.php

@@ -21,6 +21,7 @@ class event_산저병연구 extends Command\NationCommand{
     }
 
     protected function init(){
+        $this->setCity();
         $this->setNation(['gold','rice','aux']);
         $this->fullConditionConstraints=[];