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**Description**

<!-- A short description of your feature -->
This feature requests a way to support custom views in plugins without any menu. Right now, all the views listed in `AirflowPlugin.appbuilder_views` are added with menu to the appbuilder.

**Use case / motivation**
In a custom plugin I built, I need to add a distinct view for details of custom operator. Then I use the `BaseOperator.operator_extra_links` to link this new UI view with the task links.
However, this view has no need to show in the airflow menu, but rather should be shown in UI similarly to `views.DagModelView`. That is, the view should be added to flask appbuilder using `appbuilder.add_view_no_menu` call but right now all the views in `AirflowPlugin.appbuilder_views` are added by calling `appbuilder.add_view`

**What do you want to happen?**

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step back and describe what you are trying to achieve.

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Maybe if "name" is missing in the dict in `AirflowPlugin.appbuilder_views` list, then when integrating plugin to flask app context, it'll just call:
```python
appbuilder.add_view_no_menu(v["view"])
```
otherwise the default behavior.

airflow/www/extensions/init_views.py
)
    appbuilder.add_view(
        views.PoolModelView, permissions.RESOURCE_POOL, category=permissions.RESOURCE_ADMIN_MENU
    )
    appbuilder.add_view(
        views.XComModelView, permissions.RESOURCE_XCOM, category=permissions.RESOURCE_ADMIN_MENU
    )
    
    
    appbuilder.add_view_no_menu(views.RedocView)
def init_plugins(app):
    """Integrate Flask and FAB with plugins"""
    from airflow import plugins_manager
    plugins_manager.initialize_web_ui_plugins()
    appbuilder = app.appbuilder
    for view in plugins_manager.flask_appbuilder_views:
        log.debug("Adding view %s", view["name"])
        appbuilder.add_view(view["view"], view["name"], category=view["category"])
    for menu_link in sorted(plugins_manager.flask_appbuilder_menu_links, key=lambda x: x["name"]):
        log.debug("Adding menu link %s", menu_link["name"])
        appbuilder.add_link(
            menu_link["name"],
            href=menu_link["href"],
            category=menu_link["category"],
            category_icon=menu_link["category_icon"],
        )
    for blue_print in plugins_manager.flask_blueprints:
        log.debug("Adding blueprint %s:%s", blue_print["name"], blue_print["blueprint"].import_name)
        app.register_blueprint(blue_print["blueprint"])
def init_connection_form():