Add new Navbar shape to allow other to easily inject item into the top navigation bar

[MikeAlhayek]

Is your feature request related to a problem? Please describe.

It is hard to current inject custom items into the Navbar. We also seems to have multiple shapes to act as menu items.

Introduce a single Navbar shape like we did in UserMenu which allow us to easily inject items using driver instead of global filters.

[agriffard]

The front displays the culture picker with a dropdownmenu (the text is the current culture and the list contains the other cultures):

while the admin uses a select dropdownlist (with all cultures)

Should we also use a dropdown menu in admin?

[agriffard]

If we can a have the razor/liquid equivalent of each shape in the docs (like we did for the AdminBranding), that would be great.

[MikeAlhayek]

Should we also use a dropdown menu in admin?

I agree that we should. But, maybe in a separate PR. In the PR I submitted, the idea was to introduce the Navbar and inject the shapes when the modules are enabled.

If we can a have the razor/liquid equivalent of each shape in the docs (like we did for the AdminBranding), that would be great.

There are too many items to document. Is there a specific shape you want to document? It's like anything else in OC. Not sure if we want to document every shape

[agriffard]

I mean the Navbar shapes: VisitSiteNavbarItem for example.

[MikeAlhayek]

@agriffard where would you document that? release notes?

[agriffard]

There is this example but it is for the admin module, not TheAdminTheme that does not have a dedicated page:
https://docs.orchardcore.net/en/latest/docs/reference/modules/Admin/#customize-admin-branding

There is this page, but this is to create a custom admin theme:
https://docs.orchardcore.net/en/latest/docs/guides/create-admin-theme/

[MikeAlhayek]

@agriffard I added the docs.