Add optional configuration for top level navigation given netbox 3.4

[ryanmerolle]

See https://github.com/ryanmerolle/netbox-acls/blob/dev/netbox_acls/navigation.py for an example approach.

[alsigna]

is it about this part? did not know about this feature, will check.

if plugin_settings.get("top_level_menu"):
    menu = PluginMenu(
        label="Access Lists",
        groups=(("ACLs", menu_buttons),),
        icon_class="mdi mdi-lock",
    )
else:
    menu_items = menu_buttons

[ryanmerolle]

Introduced in 3.4.0

netbox-community/netbox#9071