add route for tenant subject

src/angular/frontend/src/app/app.routes.ts

@@ -93,6 +93,11 @@ export const routes: Routes = [
               title: tenantNameResolver,
             },
             children: [
+              {
+                title: 'Subject TODO',
+                path: 'subject/:subjectId',
+                component: HomeComponent
+              },
               {
                 title: 'Apps',
                 path: 'apps',