chore: merge blocksuite source code (#9213)

blocksuite/playground/apps/starter/data/index.ts

@@ -0,0 +1,19 @@
+/**
+ * Manually create initial page structure.
+ * In collaboration mode or on page refresh with local persistence,
+ * the page structure will be automatically loaded from provider.
+ * In these cases, these functions should not be called.
+ */
+export * from './affine-snapshot.js';
+export * from './database.js';
+export * from './embed.js';
+export * from './empty.js';
+export * from './heavy.js';
+export * from './heavy-whiteboard.js';
+export * from './linked.js';
+export * from './multiple-editor.js';
+export * from './pending-structs.js';
+export * from './preset.js';
+export * from './synced.js';
+export type { InitFn } from './utils.js';
+export * from './version-mismatch.js';