Navbar Improvements

[deo002]

Navbar component has become overcomplicated. We need to refactor and decompose it to make it proper.

[hoangnt2]

I think we can add nested property to navbar items like this. If the item has nested properties, It will show the dropdown list. Then we will refactor the Navbar component to fit the new format.

[
    {
        "link": "/home",
        "name": "Home"
    },
    {
        "link": "/vulnerabilities",
        "name": "Vulnerabilities"
    },
    {
        "link": "/admin",
        "name": "Admin"
        "nested": [
            {
                "link": "/obligations",
                "name": "Obligations"
            },
            {
                "link": "/oauth-client",
                "name": "OAuth Client"
            }
        ]
    },
    {
        "link": "/preferences",
        "name": "Preferences"
    }
]

[heliocastro]

@deo002 @hoangnt2 I think this discussion over, no ?
Navbar for the current state is stable and we can expect changes only on the "After19" UI framework change plans.