plugin fails to find ptvsd if path has trailing separator.

[MagusLucius]

Add-on Version: 1.0.0
Blender Version: 2.82
VS Code Version: 1.44

if where, which or whereis returns a path with a trailing separator (e.g. "/" ) the blender plugin fails to find ptvsd because it tries to append "/ptvsd" to the path.

recommend inserting path = path.rstrip('/') here:

for path in sys.path:
      if os.path.exists(path+"/ptvsd"):
         return path
      if os.path.exists(path+"/site-packages/ptvsd"):
         return path+"/site-packages"
      if os.path.exists(path+"/lib/site-packages/ptvsd"):
         return path+"lib/site-packages"
   return "PTVSD not Found"

and change

ptvsd_path = prefs.path

to

ptvsd_path = prefs.path.rstrip('/')

workaround is to manually add path but remove trailing separator when activating plugin.