Warn about limitations in tutorial and point to MGI tutorial (#649)

Co-authored-by: Henning Kayser <[email protected]>

Author: sameergupta4873

doc/tutorials/your_first_project/your_first_project.rst

@@ -3,6 +3,8 @@ Your First C++ MoveIt Project
 
 This tutorial will step you through writing your first C++ application with MoveIt.
 
+Warning: Most features in MoveIt will not work properly since additional parameters are required for full Move Group functionality. For a full setup, please continue with the :doc:`Move Group C++ Interface Tutorial <doc/examples/move_group_interface/move_group_interface_tutorial>`.
+
 Prerequisites
 -------------