add login component and auth service

admin/src/app/auth/jwt.interceptor.ts

@@ -0,0 +1,29 @@
+import { Injectable } from '@angular/core';
+import {
+  HttpEvent,
+  HttpHandler,
+  HttpInterceptor,
+  HttpRequest,
+} from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { AuthService } from './auth.service';
+
+@Injectable()
+export class JwtInterceptor implements HttpInterceptor {
+  constructor(private authService: AuthService) {}
+
+  intercept(
+    request: HttpRequest<any>,
+    next: HttpHandler
+  ): Observable<HttpEvent<any>> {
+    const token = this.authService.getToken();
+    if (token) {
+      request = request.clone({
+        setHeaders: {
+          Authorization: `Bearer ${token}`,
+        },
+      });
+    }
+    return next.handle(request);
+  }
+}