Move VerilogEditor and VerilogSimulator under VERILOG_TOWN

The two projects are moved because VERILOG_TOWN has all the Eclipse projects.
Initial import of LevelEditor

This project still has more development needed. The current state of the level
editor is:
* Can output map in XML format to stdout (TODO: output to file)
* Can output map image in png

Some of the things that are needed to be done are:
* Add car editor (until then, cars must be edited by hand)
* Edit existing map by reading in XML
Add xml and png images for the first three levels