feat: Implement album and person sharing with user search and a dedicated share dialog.

libertas_api/src/services/user_service.rs

@@ -96,4 +96,8 @@ impl UserService for UserServiceImpl {
             .await?
             .ok_or(CoreError::NotFound("User".to_string(), user_id))
     }
+
+    async fn search_users(&self, query: &str) -> CoreResult<Vec<User>> {
+        self.repo.search_users(query).await
+    }
 }