feat: create nav-item interface

npm/ng-packs/packages/theme-shared/src/lib/models/index.ts

@@ -2,3 +2,4 @@ export * from './common';
 export * from './confirmation';
 export * from './statistics';
 export * from './toaster';
+export * from './nav-item';

npm/ng-packs/packages/theme-shared/src/lib/models/nav-item.ts

@@ -0,0 +1,10 @@
+import { Type } from '@angular/core';
+
+export interface NavItem {
+  id: string | number;
+  component?: Type<any>;
+  html?: string;
+  action?: () => void;
+  order?: number;
+  requiredPolicy?: string;
+}