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

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

blocksuite/affine/blocks/root/package.json

@@ -46,6 +46,7 @@
     "@blocksuite/affine-widget-edgeless-auto-connect": "workspace:*",
     "@blocksuite/affine-widget-edgeless-toolbar": "workspace:*",
     "@blocksuite/affine-widget-frame-title": "workspace:*",
+    "@blocksuite/affine-widget-linked-doc": "workspace:*",
     "@blocksuite/affine-widget-remote-selection": "workspace:*",
     "@blocksuite/affine-widget-scroll-anchoring": "workspace:*",
     "@blocksuite/affine-widget-slash-menu": "workspace:*",