[TGT-TTB] More efficient map now
[TGT-TTB] Move FF printing into ivl_target call
[TGT-TTB] Now outputing dotfile

This was updated to output dotfiles. This was a big change which has broken the python scripts which were originally
built to parse the output of tgt-ttb and create all signal groups that we need to track, but this should 1) make
debugging a lot easier and 2) not be too bad to parse. Currently there is no way to get slicing information from the
graphviz, I think I will have to add that in even though it will make the graph much more convoluted. I'm trying to find
a way to create a simple graph and a fully sliced graph