basic login/logout

client/src/app/screens/screen-profile/screen-profile.html

@@ -11,6 +11,7 @@
         <i class="bi bi-wallet2 fs-4"></i>
         <h3 class="mb-0">{{ balance  | currency}}</h3>
       </div>
+      <button type="button" (click)="logOut()" class="btn btn-outline-secondary">Log out</button>
     </div>
   </div>