add loader

src/store/store.js

@@ -30,6 +30,8 @@ class Store {
 
   _accountInfo = {};
 
+  _loading = false;
+
   constructor() {
     makeAutoObservable(this, {});
 
@@ -289,6 +291,14 @@ class Store {
       [item.label]: item.value
     }), {})
   }
+
+  get loading() {
+    return this._loading;
+  }
+
+  set loading(value) {
+    this._loading = value;
+  }
 }
 
 export const store = new Store();