refactor(editor): unify directories naming (#11516)

**Directory Structure Changes**

- Renamed multiple block-related directories by removing the "block-" prefix:
  - `block-attachment` → `attachment`
  - `block-bookmark` → `bookmark`
  - `block-callout` → `callout`
  - `block-code` → `code`
  - `block-data-view` → `data-view`
  - `block-database` → `database`
  - `block-divider` → `divider`
  - `block-edgeless-text` → `edgeless-text`
  - `block-embed` → `embed`

blocksuite/affine/blocks/database/src/utils/title-doc.ts

@@ -0,0 +1,30 @@
+import type { AffineTextAttributes } from '@blocksuite/affine-shared/types';
+import type { DeltaOperation, Text } from '@blocksuite/store';
+
+export const getSingleDocIdFromText = (text?: Text) => {
+  const deltas = text?.deltas$.value;
+  if (!deltas) return;
+  let linkedDocId: string | undefined = undefined;
+  for (const delta of deltas) {
+    if (isLinkedDoc(delta)) {
+      if (linkedDocId) {
+        return;
+      }
+      linkedDocId = delta.attributes?.reference?.pageId as string;
+    } else if (delta.insert) {
+      return;
+    }
+  }
+  return linkedDocId;
+};
+
+export const isLinkedDoc = (delta: DeltaOperation) => {
+  const attributes: AffineTextAttributes | undefined = delta.attributes;
+  return attributes?.reference?.type === 'LinkedPage';
+};
+
+export const isPureText = (text?: Text): boolean => {
+  const deltas = text?.deltas$.value;
+  if (!deltas) return true;
+  return deltas.every(v => !isLinkedDoc(v));
+};