vtags editor plug-in v1.0

vtags aims to develop a plug-in that performs Verdi-like signal tracking, topology display and other functions on verilog/VHDL design codes under general editors such as vim/emacs. The vtags plug-in is completely implemented in python and is currently implemented under vim. Perform signal tracking, macro definition tracking, display module topology, quickly open files, save and open vim snapshots, add breakpoints and other functions for Verilog designs.