feat(editor): gfx link extension (#12046)

Closes: BS-3368

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

## Summary by CodeRabbit

- **New Features**
  - Introduced a new link tool extension, enabling enhanced link-related functionality within the edgeless workspace.
  - Added a new view extension for link tools, improving integration and usability in edgeless mode.

- **Chores**
  - Added a new package for link tool functionality with appropriate dependencies and exports.
  - Registered new custom elements for edgeless toolbars and link tools to support modular UI components.
  - Updated project configurations and workspace dependencies to include the new link tool module.

- **Refactor**
  - Removed unused quick tool exports and toolbar component registrations to streamline the edgeless extension codebase.

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

blocksuite/affine/gfx/link/src/link-tool.ts

@@ -0,0 +1,13 @@
+import { QuickToolExtension } from '@blocksuite/affine-widget-edgeless-toolbar';
+import { html } from 'lit';
+
+import { buildLinkDenseMenu } from './toolbar/link-dense-menu';
+
+export const linkQuickTool = QuickToolExtension('link', ({ block, gfx }) => {
+  return {
+    content: html`<edgeless-link-tool-button
+      .edgeless=${block}
+    ></edgeless-link-tool-button>`,
+    menu: buildLinkDenseMenu(block, gfx),
+  };
+});