Fix projection example imports from meshing to projection module

Functions project_mesh_on_mesh, project_points_on_mesh, pull_mesh_on_mesh,
and pull_points_on_mesh were moved to compas_cgal.projection but the example
still imported them from compas_cgal.meshing, causing ImportError.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: petrasvestartas

docs/examples/example_projection.py

@@ -4,10 +4,10 @@
 from compas.geometry import Point
 from compas_viewer import Viewer
 
-from compas_cgal.meshing import project_mesh_on_mesh
-from compas_cgal.meshing import project_points_on_mesh
-from compas_cgal.meshing import pull_mesh_on_mesh
-from compas_cgal.meshing import pull_points_on_mesh
+from compas_cgal.projection import project_mesh_on_mesh
+from compas_cgal.projection import project_points_on_mesh
+from compas_cgal.projection import pull_mesh_on_mesh
+from compas_cgal.projection import pull_points_on_mesh
 
 # =============================================================================
 # Source