Create login route and protect routes (#3)

Co-authored-by: Phan Huy Tran <p.tran@neusta.de>
Reviewed-on: #3
Co-authored-by: ptran <huydw@proton.me>
Co-committed-by: ptran <huydw@proton.me>

src/app/services/auth.service.ts

@@ -0,0 +1,10 @@
+import {Injectable} from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AuthService {
+  public isAuthenticated(): boolean {
+    return false;
+  }
+}