feat(editor): add line number display option for code block (#12305)

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

- **New Features**
  - Added a toggle in the code block toolbar to show or hide line numbers for individual code blocks.
  - The display of line numbers now respects both global and per-block settings, allowing more flexible control.
- **Style**
  - Updated styles to hide line numbers when disabled via the new toggle option.
- **Tests**
  - Added end-to-end tests to verify toggling line numbers visibility and undo/redo behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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

@@ -13,6 +13,7 @@ type CodeBlockProps = {
   wrap: boolean;
   caption: string;
   preview?: boolean;
+  lineNumber?: boolean;
 } & BlockMeta;
 
 export const CodeBlockSchema = defineBlockSchema({
@@ -24,6 +25,7 @@ export const CodeBlockSchema = defineBlockSchema({
       wrap: false,
       caption: '',
       preview: undefined,
+      lineNumber: undefined,
       'meta:createdAt': undefined,
       'meta:createdBy': undefined,
       'meta:updatedAt': undefined,