Twitch login, TTS Login, and basic policies ui.

src/app/navigation/navigation.component.html

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+<nav>
+    <ul>
+        <li>
+            <a
+                routerLink="/login"
+                routerLinkActive="active"
+                *ngIf="!twitch_logged_in">
+                Login
+            </a>
+        </li>
+        <li>
+            <a
+                routerLink="/tts-login"
+                routerLinkActive="active"
+                *ngIf="twitch_logged_in && !tts_logged_in">
+                TTS Login
+            </a>
+        </li>
+        <li>
+            <a
+                routerLink="/policies"
+                routerLinkActive="active"
+                *ngIf="twitch_logged_in && tts_logged_in">
+                Policies
+            </a>
+        </li>
+    </ul>
+</nav>

src/app/navigation/navigation.component.scss

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+$primary_background_color: #EEEEEE;
+$primary_font_color: #111111;
+
+$secondary_background_color: #DDDDDD;
+$secondary_font_color: #333333;
+
+
+ul {
+    padding: 0;
+}
+
+li {
+    list-style: none;
+    width: 100%;
+    display: flex;
+    flex-grow: 1;
+    justify-content: center;
+    flex-direction: column;
+}
+
+a {
+    background-color: transparent;
+    padding: 1em;
+    border: 0;
+    margin: 0;
+    font-size: large;
+    text-decoration: none;
+    color: $primary_font_color;
+}
+
+a:hover {
+    background-color: #FCFCFC;
+}
+
+a.active {
+    background-color: #F5F5F5;
+}

src/app/navigation/navigation.component.spec.ts

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+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { NavigationComponent } from './navigation.component';
+
+describe('NavigationComponent', () => {
+  let component: NavigationComponent;
+  let fixture: ComponentFixture<NavigationComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [NavigationComponent]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(NavigationComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/navigation/navigation.component.ts

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+import { Component } from '@angular/core';
+import { RouterModule } from '@angular/router';
+import { CommonModule } from '@angular/common';
+import { HermesClientService } from '../hermes-client.service';
+import { ApiAuthenticationService } from '../shared/services/api/api-authentication.service';
+
+@Component({
+  selector: 'navigation',
+  standalone: true,
+  imports: [CommonModule, RouterModule],
+  templateUrl: './navigation.component.html',
+  styleUrl: './navigation.component.scss'
+})
+export class NavigationComponent {
+    constructor(private auth: ApiAuthenticationService, private hermes: HermesClientService) { }
+
+    get twitch_logged_in() {
+        return this.auth.isAuthenticated();
+    }
+
+    get tts_logged_in() {
+        return this.hermes?.logged_in ?? false;
+    }
+}