Support basic Windows file sharing

My first LWRP  :-)  windows_share is intended to provide a means to
create basic file shares with sane defaults for share permissions and
default action.

Also, I believe I've signed the CCLA, so not sure why Curry is flagging me as non-verified.
if you don't need the output streams, you could just use batch / powershell resources to run the command since they let you specify architecture. We do need to add the x64 flag to mixlib::shellout though...