Add a base class for commands that provides wad and map arguments.

dcc/pb.py

@@ -1,14 +1,8 @@
-from cliff.command import Command
 import dcc.config
+import dcc.doom_base
 import vlc
 
-class PB(Command):
-	def get_parser(self, prog_name):
-		parser = super().get_parser(prog_name)
-		parser.add_argument('wad')
-		parser.add_argument('map')
-		return parser
-
+class PB(dcc.doom_base.WadMap):
 	def take_action(self, parsed_args):
 		v = dcc.config.VideoPath(parsed_args.wad, parsed_args.map)
 		mp = vlc.MediaPlayer(v)