feat(llc): add support for partialUserUpdate endpoint.

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat/lib/src/client/client.dart

@@ -1073,6 +1073,28 @@ class StreamChatClient {
   Future<UpdateUsersResponse> updateUsers(List<User> users) =>
       _chatApi.user.updateUsers(users);
 
+  /// Partially update the given user with [id].
+  /// Use [set] to define values to be set.
+  /// Use [unset] to define values to be unset.
+  Future<UpdateUsersResponse> partialUpdateUser(
+    String id, {
+    Map<String, Object?>? set,
+    List<String>? unset,
+  }) {
+    final user = PartialUpdateUserRequest(
+      id: id,
+      set: set,
+      unset: unset,
+    );
+    return partialUpdateUsers([user]);
+  }
+
+  /// Batch partial updates the [users].
+  Future<UpdateUsersResponse> partialUpdateUsers(
+    List<PartialUpdateUserRequest> users,
+  ) =>
+      _chatApi.user.partialUpdateUsers(users);
+
   /// Bans a user from all channels
   Future<EmptyResponse> banUser(
     String targetUserId, [