feat(editor): group gfx extension (#11950)

Closes: BS-3208

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

## Summary by CodeRabbit

- **New Features**
  - Introduced a new group view extension, enhancing how group elements are handled and displayed.
  - Added new store and view modules for group-related features, improving modularity and integration.

- **Refactor**
  - Updated the group element architecture to use extension-based registration for views, toolbars, and effects.
  - Simplified and reorganized exports for group and text modules.

- **Chores**
  - Updated dependencies and project references to improve build consistency and compatibility.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/gfx/group/tsconfig.json

@@ -9,6 +9,7 @@
   "references": [
     { "path": "../../blocks/surface" },
     { "path": "../../components" },
+    { "path": "../../ext-loader" },
     { "path": "../text" },
     { "path": "../../model" },
     { "path": "../../rich-text" },