make package: add toplevel directory

Author: howetuft

CMakeLists.txt

@@ -304,6 +304,7 @@ set(CPACK_PACKAGE_VERSION "${LUXCORE_VERSION}")
 set(CPACK_GENERATOR "ZIP")
 set(CPACK_STRIP_FILES TRUE)
 set(CPACK_THREADS 0)
+set(CPACK_COMPONENT_INCLUDE_TOPLEVEL_DIRECTORY ON)
 
 set(CPACK_ARCHIVE_COMPONENT_INSTALL ON)  # Install: per-component
 set(CPACK_COMPONENTS_GROUPING "ALL_COMPONENTS_IN_ONE") # Archive: all-in-one