refactor(editor): add cache extension for link preview service (#12196)

Closes: [BS-2578](https://linear.app/affine-design/issue/BS-2578/优化-footnote-预览的逻辑：支持缓存结果，避免重复-loading)

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

- **New Features**
  - Introduced a link preview caching mechanism, enabling faster and more efficient reuse of link preview data across the app.
  - Added a feature flag for enabling or disabling link preview cache, configurable through workspace experimental settings.
  - Enhanced localization with new entries describing the link preview cache feature.

- **Improvements**
  - Updated link preview service architecture for better extensibility and maintainability.
  - Improved integration of feature flags throughout chat and rendering components.

- **Bug Fixes**
  - Fixed tooltip formatting for footnote URLs.

- **Chores**
  - Updated dependencies and localization completeness tracking.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/model/src/utils/types.ts

@@ -1,4 +1,5 @@
 import type { GfxModel } from '@blocksuite/std/gfx';
+import { z } from 'zod';
 
 import type {
   BrushElementModel,
@@ -20,12 +21,14 @@ export type EmbedCardStyle =
   | 'pdf'
   | 'citation';
 
-export type LinkPreviewData = {
-  description: string | null;
-  icon: string | null;
-  image: string | null;
-  title: string | null;
-};
+export const LinkPreviewDataSchema = z.object({
+  description: z.string().nullable(),
+  icon: z.string().nullable(),
+  image: z.string().nullable(),
+  title: z.string().nullable(),
+});
+
+export type LinkPreviewData = z.infer<typeof LinkPreviewDataSchema>;
 
 export type Connectable = Exclude<
   GfxModel,