Fix CMP0171 by renaming codegen to vcodegen

Update version number to v5.5.3

Fix additional subdirectory issues with wish_create_external

Fix some subdirectory issue with wish_create_ide_target, wish_group a…

…nd wish_resource_mapping

Add optdebug build type

Add wish_werror

Add PLUGIN support for wish_generator

Handle wish_resource_mapping empty resource sets

Modify wish_resource_mapping CMAKE_SOURCE_DIR marker from / to @ or @/

Modify wish_resource_mapping expose the resource file mapping instead…

… of the mapping function