add login with dummy Data

add login page
add subcomponents

src/app/dashboard/header/header.component.ts

@@ -0,0 +1,20 @@
+import { Component, OnInit } from '@angular/core';
+import { Router } from '@angular/router';
+import { DashboardService } from 'src/app/dashboard.service';
+
+@Component({
+  selector: 'dashboard-header',
+  templateUrl: './header.component.html',
+  styleUrls: ['./header.component.css']
+})
+export class DashboardHeaderComponent implements OnInit {
+
+  constructor(
+    public dashboard: DashboardService,
+    public router: Router
+  ) { }
+
+  ngOnInit(): void {
+  }
+
+}