feat(editor): add experimental feature adapter panel to AFFiNE canary (#12489)

Closes: [BS-2539](https://linear.app/affine-design/issue/BS-2539/为-affine-添加-ef，并且支持在-affine-预览对应的功能)

> [!warning]
> This feature is only available in the canary build and is intended for debugging purposes.

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

- **New Features**
  - Introduced an "Adapter Panel" feature with a new sidebar tab for previewing document content in multiple formats (Markdown, PlainText, HTML, Snapshot), controllable via a feature flag.
  - Added a fully integrated adapter panel component with reactive UI elements for selecting adapters, toggling HTML preview modes, and updating content.
  - Provided a customizable adapter panel for both main app and playground environments, supporting content transformation pipelines and export previews.
  - Enabled seamless toggling and live updating of adapter panel content through intuitive menus and controls.

- **Localization**
  - Added English translations and descriptive settings for the Adapter Panel feature.

- **Chores**
  - Added new package and workspace dependencies along with TypeScript project references to support the Adapter Panel modules and components.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/i18n/src/i18n.gen.ts

@@ -5890,6 +5890,14 @@ export function useAFFiNEI18N(): {
       * `Once enabled, you can preview HTML in code block.`
       */
     ["com.affine.settings.workspace.experimental-features.enable-code-block-html-preview.description"](): string;
+    /**
+      * `Adapter Panel`
+      */
+    ["com.affine.settings.workspace.experimental-features.enable-adapter-panel.name"](): string;
+    /**
+      * `Once enabled, you can preview adapter export content in the right side bar.`
+      */
+    ["com.affine.settings.workspace.experimental-features.enable-adapter-panel.description"](): string;
     /**
       * `Only an owner can edit the workspace avatar and name. Changes will be shown for everyone.`
       */

packages/frontend/i18n/src/resources/en.json

@@ -1471,6 +1471,8 @@
   "com.affine.settings.workspace.experimental-features.enable-table-virtual-scroll.description": "Once enabled, switch table view to virtual scroll mode in Database Block.",
   "com.affine.settings.workspace.experimental-features.enable-code-block-html-preview.name": "Code block HTML preview",
   "com.affine.settings.workspace.experimental-features.enable-code-block-html-preview.description": "Once enabled, you can preview HTML in code block.",
+  "com.affine.settings.workspace.experimental-features.enable-adapter-panel.name": "Adapter Panel",
+  "com.affine.settings.workspace.experimental-features.enable-adapter-panel.description": "Once enabled, you can preview adapter export content in the right side bar.",
   "com.affine.settings.workspace.not-owner": "Only an owner can edit the workspace avatar and name. Changes will be shown for everyone.",
   "com.affine.settings.workspace.preferences": "Preference",
   "com.affine.settings.workspace.billing": "Team's Billing",