install qgis_server additional files to share/qgis

Index: src/server/CMakeLists.txt
--- src/server/CMakeLists.txt.orig
+++ src/server/CMakeLists.txt
@@ -184,7 +184,7 @@ install(TARGETS
 )
 
 install(FILES
-  DESTINATION ${QGIS_CGIBIN_DIR}
+  DESTINATION ${QGIS_DATA_DIR}
 )
 add_custom_target(qgis_server_full
   DEPENDS qgis_mapserv.fcgi wms wfs wcs wfs3 wmts qgis_server landingpage
