refactor(editor): extract attachment block (#9308)

blocksuite/affine/block-attachment/src/effects.ts

@@ -0,0 +1,19 @@
+import { AttachmentBlockComponent } from './attachment-block';
+import { AttachmentEdgelessBlockComponent } from './attachment-edgeless-block';
+import type { AttachmentBlockService } from './attachment-service';
+
+export function effects() {
+  customElements.define(
+    'affine-edgeless-attachment',
+    AttachmentEdgelessBlockComponent
+  );
+  customElements.define('affine-attachment', AttachmentBlockComponent);
+}
+
+declare global {
+  namespace BlockSuite {
+    interface BlockServices {
+      'affine:attachment': AttachmentBlockService;
+    }
+  }
+}