Add pafwd dynmenu section

Contains some pulseaudio forwarding control commands

dotfiles/config/bmo/menu.ini

     selector_args = --split =
     consumer    = bash -
 
+[menu.def.pafwd]
+    generator = $HOME/bin/dynmenu pafwd
+    selector_args = --split =
+    consumer    = bash -
+
 [menu.def.query]
     generator   = pybmo conf -j -s wish.query
     selector_args = -l 20 --split = --split-field 1