feat(editor): extract linked doc widget package (#11589)

Close [BS-2738](https://github.com/toeverything/AFFiNE/pull/11589)

blocksuite/playground/apps/_common/components/starter-debug-menu.ts

@@ -17,14 +17,6 @@ import '@shoelace-style/shoelace/dist/themes/dark.css';
 import './left-side-panel.js';
 
 import { defaultImageProxyMiddleware } from '@blocksuite/affine/blocks/image';
-import {
-  createAssetsArchive,
-  download,
-  HtmlTransformer,
-  MarkdownTransformer,
-  NotionHtmlTransformer,
-  ZipTransformer,
-} from '@blocksuite/affine/blocks/root';
 import { ExportManager } from '@blocksuite/affine/blocks/surface';
 import { toast } from '@blocksuite/affine/components/toast';
 import {
@@ -55,6 +47,14 @@ import {
   Text,
   type Workspace,
 } from '@blocksuite/affine/store';
+import {
+  createAssetsArchive,
+  download,
+  HtmlTransformer,
+  MarkdownTransformer,
+  NotionHtmlTransformer,
+  ZipTransformer,
+} from '@blocksuite/affine/widgets/linked-doc';
 import { NotionHtmlAdapter } from '@blocksuite/affine-shared/adapters';
 import type { AffineTextAttributes } from '@blocksuite/affine-shared/types';
 import { TestAffineEditorContainer } from '@blocksuite/integration-test';

blocksuite/playground/apps/starter/data/affine-snapshot.ts

@@ -1,6 +1,6 @@
-import { ZipTransformer } from '@blocksuite/affine/blocks/root';
 import { AffineSchemas } from '@blocksuite/affine/schemas';
 import { Schema, Text, type Workspace } from '@blocksuite/affine/store';
+import { ZipTransformer } from '@blocksuite/affine/widgets/linked-doc';
 export async function affineSnapshot(collection: Workspace, id: string) {
   const doc = collection.createDoc(id);
   doc.load();

blocksuite/playground/apps/starter/data/preset.ts

@@ -1,5 +1,5 @@
-import { MarkdownTransformer } from '@blocksuite/affine/blocks/root';
 import { Text, type Workspace } from '@blocksuite/affine/store';
+import { MarkdownTransformer } from '@blocksuite/affine/widgets/linked-doc';
 
 import type { InitFn } from './utils.js';
 

blocksuite/playground/apps/starter/data/synced.ts

@@ -1,5 +1,5 @@
-import { MarkdownTransformer } from '@blocksuite/affine/blocks/root';
 import { Text, type Workspace } from '@blocksuite/affine/store';
+import { MarkdownTransformer } from '@blocksuite/affine/widgets/linked-doc';
 
 import type { InitFn } from './utils';