feat(editor): block comment extension (#12980)

#### PR Dependency Tree


* **PR #12980** 👈

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blocksuite/affine/model/src/blocks/frame/frame-model.ts

@@ -30,6 +30,7 @@ export type FrameBlockProps = {
   background: Color;
   childElementIds?: Record<string, boolean>;
   presentationIndex?: string;
+  comments?: Record<string, boolean>;
 } & GfxCompatibleProps;
 
 export const FrameZodSchema = z
@@ -50,6 +51,7 @@ export const FrameBlockSchema = defineBlockSchema({
     childElementIds: Object.create(null),
     presentationIndex: generateKeyBetweenV2(null, null),
     lockedBySelf: false,
+    comments: undefined,
   }),
   metadata: {
     version: 1,