chore: merge blocksuite source code (#9213)

blocksuite/blocks/src/data-view-block/database-service.ts

@@ -0,0 +1,13 @@
+import { BlockService } from '@blocksuite/block-std';
+import { DatabaseSelection } from '@blocksuite/data-view';
+
+import { DataViewBlockSchema } from './data-view-model.js';
+
+export class DataViewBlockService extends BlockService {
+  static override readonly flavour = DataViewBlockSchema.model.flavour;
+
+  override mounted(): void {
+    super.mounted();
+    this.selectionManager.register(DatabaseSelection);
+  }
+}