feat: delete local backups when signing out

app/assets/javascripts/ui_models/app_state/account_menu_state.ts

@@ -2,12 +2,16 @@ import { action, makeObservable, observable } from "mobx";
 
 export class AccountMenuState {
   show = false;
+  signingOut = false;
 
   constructor() {
     makeObservable(this, {
       show: observable,
+      signingOut: observable,
+
       setShow: action,
       toggleShow: action,
+      setSigningOut: action,
     });
   }
 
@@ -15,6 +19,10 @@ export class AccountMenuState {
     this.show = show;
   }
 
+  setSigningOut = (signingOut: boolean): void => {
+    this.signingOut = signingOut;
+  }
+
   toggleShow = (): void => {
     this.show = !this.show;
   }