Add menu item to toggle
user
```coffeescript
'menu': [
  {
    'label': 'Packages'
    'submenu': [
      'label': 'Keybinding Resolver'
      'submenu': [
        { 'label': 'Toggle', 'command': 'key-binding-resolver:toggle' }
      ]
    ]
  }
]
```
assistant