chore(demo): add external stackblitz playground

projects/demo/src/modules/app/app.routes.ts

@@ -1058,11 +1058,6 @@ export const ROUTES: Routes = [
         loadComponent: async () => import('../components/animations'),
         title: 'Animations',
     }),
-    route({
-        path: DemoRoute.StackblitzStarter,
-        loadComponent: async () => import('./stackblitz/starter'),
-        title: 'Stackblitz Starter',
-    }),
     route({
         path: DemoRoute.MigrationGuide,
         loadComponent: async () => import('../info/migration-guide'),

projects/demo/src/modules/app/demo-routes.ts

@@ -209,6 +209,7 @@ export const DemoRoute = {
     Tokens: '/utils/tokens',
     Pure: '/utils/pure',
     Animations: '/animations',
-    StackblitzStarter: '/stackblitz',
+    StackblitzStarter:
+        'https://stackblitz.com/~/github.com/taiga-family/taiga-playground',
     MigrationGuide: '/migration-guide',
 } as const;

projects/demo/src/modules/app/stackblitz/stackblitz.service.ts

@@ -5,9 +5,9 @@ import type {TuiCodeEditor} from '@taiga-ui/addon-doc';
 import {PolymorpheusComponent} from '@taiga-ui/polymorpheus';
 
 import {TsFileComponentParser} from '../classes';
+import {StackblitzEditButton} from './edit';
 import {StackblitzDepsService} from './stackblitz-deps.service';
 import {AbstractTuiStackblitzResourcesLoader} from './stackblitz-resources-loader';
-import {StackblitzEditButton} from './starter/stackblitz-edit';
 import {appPrefix, getSupportFiles, prepareLess, prepareSupportFiles} from './utils';
 
 const APP_COMP_META = {