Add new file

navbar.html

+<nav class="navbar navbar-expand-lg navbar-dark bg-primary mb-4">
+    <div class="container">
+        <a class="navbar-brand" href="{% url 'home' %}">Uni Hub</a>
+        <div class="navbar-nav">
+            <a class="nav-link" href="{% url 'communities' %}">Communities</a>
+            <a class="nav-link" href="{% url 'events' %}">Events</a>
+        </div>
+    </div>
+</nav>
\ No newline at end of file