EHS: Adding search in CG02

With standard SAP, specification can be searched for only
one material. Using this document, specifications can be searched for
multiple materials.

Create FM ZEHS_OCC_SUB_FIND_BY_MAT_PARA with code in attached
the FM_PARA. This FM will be called to enter different materials(Selection )

Create FM ZEHS_OCC_SUB_FIND_BY_MAT with code in attached the
FM document. This FM to get materials for the selection

Create FM ZEHS_OCC_SUB_FIND_BY_MAT_CMD with code in attached
the FM_CMD. This FM to display the search results

EHS->Basic data->Basic settings->user exits->create below entry

After above steps, CG02 shows with above extended functionality