feat(editor): edgeless auto connect widget extension (#11990)

Closes: BS-3221
Closes: BS-3222

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

- **New Features**
  - Introduced extensions that conditionally register edgeless auto-connect and toolbar widgets with associated effects based on the view context.
  - Added new exports for edgeless auto-connect and toolbar widget views, making them available for external use.

- **Chores**
  - Updated dependencies and project references to include the extension loader for improved module integration.
  - Refined workspace configuration to reflect new package dependencies.

- **Refactor**
  - Streamlined registration and effect logic by removing legacy integration points for edgeless auto-connect and toolbar widgets.
  - Reorganized widget export paths to a more modular directory structure.

- **Bug Fixes**
  - Disabled pointer events on the edgeless navigator black background to prevent interaction interference.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

tools/utils/src/workspace.gen.ts

@@ -777,6 +777,7 @@ export const PackageList = [
       'blocksuite/affine/blocks/note',
       'blocksuite/affine/blocks/surface',
       'blocksuite/affine/components',
+      'blocksuite/affine/ext-loader',
       'blocksuite/affine/model',
       'blocksuite/affine/shared',
       'blocksuite/framework/global',
@@ -789,6 +790,7 @@ export const PackageList = [
     workspaceDependencies: [
       'blocksuite/affine/blocks/surface',
       'blocksuite/affine/components',
+      'blocksuite/affine/ext-loader',
       'blocksuite/affine/model',
       'blocksuite/affine/rich-text',
       'blocksuite/affine/shared',