Added login UI

- Added empty adminui component
- Added authStore

frontend/src/app/adminui/adminui.component.ts

@@ -0,0 +1,12 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'app-adminui',
+  standalone: true,
+  imports: [],
+  templateUrl: './adminui.component.html',
+  styleUrl: './adminui.component.scss'
+})
+export class AdminuiComponent {
+
+}