feat: set up nav bar and news ticker

src/app/nav/nav.ts

@@ -4,12 +4,13 @@
  * @author Naomi Carrigan
  */
 import { Component } from "@angular/core";
+import { RouterLink } from "@angular/router";
 
 /**
  * Renders the navigation bar.
  */
 @Component({
-  imports:     [],
+  imports:     [ RouterLink ],
   selector:    "app-nav",
   styleUrl:    "./nav.css",
   templateUrl: "./nav.html",