Suppress "--add_dll_search_path" in sub-parser

[jere8184]

No description provided.

[TheJJ]

why is this change needed? the parameter is added to the toplevel cli on windows only already?

[jere8184]

why is this change needed? the parameter is added to the toplevel cli on windows only already?

if you fail to provide a subcommand this parameter will be passed to the 'main' sub-parser causing it to fail with an error.
run locally (on windows)
'python -m openage --add-dll-search-path <valid_path>'
and see for yourself.

you should get the following error
'openage main: error: unrecognized arguments: --add-dll-search-path <valid_path>'
which is pretty confusing.

This change stops an error from occurring and invokes 'openage main' as if no arguments have been passed.

[TheJJ]

ah, then the proper solution is to add this as a common parent to the subparsers that make use of the option. duplication is not the proper way, unfortunately.

[jere8184]

@TheJJ i've went a slightly different, route see changes.

[heinezen]

Looks good to me