Add dynmenu vault section

dotfiles/config/bmo/menu.ini

     selector_args = --split =
     consumer    = bash -
 
+[menu.def.vault]
+    generator = $HOME/bin/dynmenu vault
+    selector_args = --split =
+    consumer    = bash -
+
 [menu.def.pafwd]
     generator = $HOME/bin/dynmenu pafwd
     selector_args = --split =