Created auth module. Created Visitor auth guard for non-logged in users.

src/app/auth/impersonation/impersonation.component.html

@@ -0,0 +1,19 @@
+@if (isAdmin()) {
+<mat-card appearance="outlined">
+  <mat-card-header>
+    <mat-card-title> Impersonation</mat-card-title>
+    <mat-card-subtitle>Impersonate as another user</mat-card-subtitle>
+  </mat-card-header>
+  <mat-card-actions>
+    <mat-form-field>
+      <mat-label>User to impersonate</mat-label>
+      <mat-select (selectionChange)="onChange($event)" [(value)]="impersonated">
+        <mat-option>{{getUsername()}}</mat-option>
+        @for (user of users; track user.id) {
+        <mat-option [value]="user.id">{{ user.name }}</mat-option>
+        }
+      </mat-select>
+    </mat-form-field>
+  </mat-card-actions>
+</mat-card>
+}