dashfolders: Add support for breadcrumbs in NavStore #10275

public/app/stores/NavStore/NavItem.ts

 import { types } from 'mobx-state-tree';
 
+const BreadcrumbItem = types.model('BreadcrumbItem', {
+  title: types.string,
+  url: types.string,
+});
+
 export const NavItem = types.model('NavItem', {
   id: types.identifier(types.string),
   text: types.string,
@@ -10,6 +15,7 @@ export const NavItem = types.model('NavItem', {
   active: types.optional(types.boolean, false),
   breadcrumbs: types.optional(types.array(types.late(() => Breadcrumb)), []),
   children: types.optional(types.array(types.late(() => NavItem)), []),
+  breadcrumbs: types.optional(types.array(BreadcrumbItem), []),
 });
 
 export const Breadcrumb = types.model('Breadcrumb', {