chore(editor): reorg packages (#10702)

blocksuite/affine/blocks/block-code/src/configs/slash-menu.ts

@@ -0,0 +1,8 @@
+import { type SlashMenuConfig } from '@blocksuite/affine-widget-slash-menu';
+
+export const codeSlashMenuConfig: SlashMenuConfig = {
+  disableWhen: ({ model }) => {
+    return model.flavour === 'affine:code';
+  },
+  items: [],
+};