Added login UI

- Added empty adminui component
- Added authStore

frontend/src/store/authStore.ts

@@ -0,0 +1,40 @@
+import { Injectable } from '@angular/core';
+import { BehaviorSubject } from 'rxjs';
+import { map } from 'rxjs/operators';
+
+interface AuthStoreState {
+  username: string;
+  token: string;
+}
+
+@Injectable({
+  providedIn: 'root'
+})
+export class AuthStore {
+  private state: BehaviorSubject<AuthStoreState> = new BehaviorSubject<AuthStoreState>({
+    username: "",
+    token: "",
+  });
+
+  // Getter for username
+  get username$() {
+    return this.state.asObservable().pipe(map(state => state.username));
+  }
+
+  // Getter for token
+  get token$() {
+    return this.state.asObservable().pipe(map(state => state.token));
+  }
+
+  // Mutation for username
+  setUsername(username: string) {
+    const currentState = this.state.getValue();
+    this.state.next({ ...currentState, username });
+  }
+
+  // Mutation for token
+  setToken(token: string) {
+    const currentState = this.state.getValue();
+    this.state.next({ ...currentState, token });
+  }
+}