feat(editor): add page dragging area widget extension (#12045)

Closes: BS-3364

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

- **New Features**
  - Introduced a new "Page Dragging Area" widget, enabling enhanced block selection and drag area detection within the user interface.
  - Added utilities for more precise block selection based on rectangular selection areas.

- **Improvements**
  - Integrated the new widget into the view extension system for consistent behavior across supported views.
  - Enhanced clipboard handling with comprehensive adapter configurations for various data types.

- **Refactor**
  - Streamlined widget registration and block selection logic for improved maintainability and modularity.
  - Removed legacy widget exports and registrations to centralize widget management.

- **Chores**
  - Updated workspace and TypeScript configurations to support the new widget module.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tools/utils/src/workspace.gen.ts

@@ -56,6 +56,7 @@ export const PackageList = [
       'blocksuite/affine/widgets/frame-title',
       'blocksuite/affine/widgets/keyboard-toolbar',
       'blocksuite/affine/widgets/linked-doc',
+      'blocksuite/affine/widgets/page-dragging-area',
       'blocksuite/affine/widgets/remote-selection',
       'blocksuite/affine/widgets/scroll-anchoring',
       'blocksuite/affine/widgets/slash-menu',
@@ -899,6 +900,19 @@ export const PackageList = [
       'blocksuite/framework/store',
     ],
   },
+  {
+    location: 'blocksuite/affine/widgets/page-dragging-area',
+    name: '@blocksuite/affine-widget-page-dragging-area',
+    workspaceDependencies: [
+      'blocksuite/affine/components',
+      'blocksuite/affine/ext-loader',
+      'blocksuite/affine/model',
+      'blocksuite/affine/shared',
+      'blocksuite/framework/global',
+      'blocksuite/framework/std',
+      'blocksuite/framework/store',
+    ],
+  },
   {
     location: 'blocksuite/affine/widgets/remote-selection',
     name: '@blocksuite/affine-widget-remote-selection',
@@ -1386,6 +1400,7 @@ export type PackageName =
   | '@blocksuite/affine-widget-frame-title'
   | '@blocksuite/affine-widget-keyboard-toolbar'
   | '@blocksuite/affine-widget-linked-doc'
+  | '@blocksuite/affine-widget-page-dragging-area'
   | '@blocksuite/affine-widget-remote-selection'
   | '@blocksuite/affine-widget-scroll-anchoring'
   | '@blocksuite/affine-widget-slash-menu'