migrated from redux to recoil

frontend/src/atoms/downloadTemplate.ts

@@ -0,0 +1,9 @@
+import { atom } from 'recoil'
+
+export const downloadTemplateState = atom({
+  key: 'downloadTemplateState',
+  default: localStorage.getItem('lastDownloadTemplate') ?? '',
+  effects: [
+    ({ onSet }) => onSet(e => localStorage.setItem('lastDownloadTemplate', e))
+  ]
+})