refactor(editor): extract widgets (#12304)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Introduced two new widgets: Edgeless Dragging Area and Note Slicer, now available for use.
  - Added extension support for these widgets, enabling enhanced interaction and integration within the application.

- **Chores**
  - Updated package configurations and workspace settings to include the new widgets and their dependencies.
  - Added project references and configuration files to support modular development and build processes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/all/src/extensions/view.ts

@@ -40,12 +40,14 @@ import { InlinePresetViewExtension } from '@blocksuite/affine-inline-preset/view
 import { ReferenceViewExtension } from '@blocksuite/affine-inline-reference/view';
 import { DragHandleViewExtension } from '@blocksuite/affine-widget-drag-handle/view';
 import { EdgelessAutoConnectViewExtension } from '@blocksuite/affine-widget-edgeless-auto-connect/view';
+import { EdgelessDraggingAreaViewExtension } from '@blocksuite/affine-widget-edgeless-dragging-area/view';
 import { EdgelessSelectedRectViewExtension } from '@blocksuite/affine-widget-edgeless-selected-rect/view';
 import { EdgelessToolbarViewExtension } from '@blocksuite/affine-widget-edgeless-toolbar/view';
 import { EdgelessZoomToolbarViewExtension } from '@blocksuite/affine-widget-edgeless-zoom-toolbar/view';
 import { FrameTitleViewExtension } from '@blocksuite/affine-widget-frame-title/view';
 import { KeyboardToolbarViewExtension } from '@blocksuite/affine-widget-keyboard-toolbar/view';
 import { LinkedDocViewExtension } from '@blocksuite/affine-widget-linked-doc/view';
+import { NoteSlicerViewExtension } from '@blocksuite/affine-widget-note-slicer/view';
 import { PageDraggingAreaViewExtension } from '@blocksuite/affine-widget-page-dragging-area/view';
 import { RemoteSelectionViewExtension } from '@blocksuite/affine-widget-remote-selection/view';
 import { ScrollAnchoringViewExtension } from '@blocksuite/affine-widget-scroll-anchoring/view';
@@ -114,6 +116,8 @@ export function getInternalViewExtensions() {
     EdgelessZoomToolbarViewExtension,
     PageDraggingAreaViewExtension,
     EdgelessSelectedRectViewExtension,
+    EdgelessDraggingAreaViewExtension,
+    NoteSlicerViewExtension,
 
     // Fragment
     DocTitleViewExtension,

blocksuite/affine/all/src/widgets/edgeless-dragging-area/index.ts

@@ -0,0 +1 @@
+export * from '@blocksuite/affine-widget-edgeless-dragging-area';

blocksuite/affine/all/src/widgets/edgeless-dragging-area/view.ts

@@ -0,0 +1 @@
+export * from '@blocksuite/affine-widget-edgeless-dragging-area/view';

blocksuite/affine/all/src/widgets/note-slicer/index.ts

@@ -0,0 +1 @@
+export * from '@blocksuite/affine-widget-note-slicer';

blocksuite/affine/all/src/widgets/note-slicer/view.ts

@@ -0,0 +1 @@
+export * from '@blocksuite/affine-widget-note-slicer/view';