feat(server): get recently updated docs (#12861)

close AI-218



#### PR Dependency Tree


* **PR #12861** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Added a "Recently Updated Documents" feature, allowing users to view a
paginated list of the most recently updated documents within a
workspace.
- Document metadata now includes a "title" field for easier
identification.
- **Tests**
- Introduced new end-to-end tests to verify the recently updated
documents query and its pagination behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/schema.gql

@@ -517,6 +517,7 @@ type DocType {
   mode: PublicDocMode!
   permissions: DocPermissions!
   public: Boolean!
+  title: String
   updatedAt: DateTime
   workspaceId: String!
 }
@@ -2062,6 +2063,9 @@ type WorkspaceType {
   """quota of workspace"""
   quota: WorkspaceQuotaType!
 
+  """Get recently updated docs of a workspace"""
+  recentlyUpdatedDocs(pagination: PaginationInput!): PaginatedDocType!
+
   """Role of current signed in user in workspace"""
   role: Permission!