Not without a lot of work.
A few people have worked on such a thing before (including myself) and there is definitely map editors in existence (yakuza co has a very, very privately kept one as well as many other tools no one else has).
In reality though you'd have to write it all yourself if you wanted it to work properly.
if you just want a simple map though it would be very easy to do manually(ish). Make a little dmap creator to set the access information for tiles and then just make some dds squares for tiles, link them together for your puz file and add it to gamemap.dat.
Would take some work but a SIMPLE map would be easy. Map editors become tricky when you start looking at making full complex maps with map objects and such.
For example, my map reader works just fine but doesn't even begin to touch map objects (trees, bridges, portals, etc). In my latest version I've started to account for dmap data which would in theory work as a map editor/creator with a bit of work but it's not a simple task.
