New headers for nnn-face.cc

In the last commit, I forgot to update the headers for nnn-face.cc
Moved nnn-packets to model subdirectory

Also updated the includes for the new directory location.
Added nnn-nnnsim-wire.h to summarize headers in Wire
Added nnn-naming to summarize naming directory headers
Main header for nnnSIM

This should be the main file to add all headers. Will go through further
changes in the following hours.
Added license information to all wire files

Also added a header to make the wire header files a little easier to manipulate.