feat(editor): callout and code extension (#11827)

Closes: BS-3243
Closes: BS-3190

blocksuite/affine/blocks/callout/src/store.ts

@@ -0,0 +1,14 @@
+import {
+  type StoreExtensionContext,
+  StoreExtensionProvider,
+} from '@blocksuite/affine-ext-loader';
+import { CalloutBlockSchemaExtension } from '@blocksuite/affine-model';
+
+export default class CalloutStoreExtension extends StoreExtensionProvider {
+  override name = 'affine-callout-block';
+
+  override setup(context: StoreExtensionContext) {
+    super.setup(context);
+    context.register(CalloutBlockSchemaExtension);
+  }
+}

blocksuite/affine/blocks/callout/src/view.ts

@@ -0,0 +1,30 @@
+import {
+  type ViewExtensionContext,
+  ViewExtensionProvider,
+} from '@blocksuite/affine-ext-loader';
+import { SlashMenuConfigExtension } from '@blocksuite/affine-widget-slash-menu';
+import { BlockViewExtension, FlavourExtension } from '@blocksuite/std';
+import { literal } from 'lit/static-html.js';
+
+import { CalloutKeymapExtension } from './callout-keymap';
+import { calloutSlashMenuConfig } from './configs/slash-menu';
+import { effects } from './effects';
+
+export default class CalloutViewExtension extends ViewExtensionProvider {
+  override name = 'affine-callout-block';
+
+  override effect() {
+    super.effect();
+    effects();
+  }
+
+  override setup(context: ViewExtensionContext) {
+    super.setup(context);
+    context.register([
+      FlavourExtension('affine:callout'),
+      BlockViewExtension('affine:callout', literal`affine-callout`),
+      CalloutKeymapExtension,
+      SlashMenuConfigExtension('affine:callout', calloutSlashMenuConfig),
+    ]);
+  }
+}