add home, header & footer components

src/app/header/header.component.html

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+<header>
+  <span>Raghu Chagarlamudi</span>
+</header>

src/app/header/header.component.spec.ts

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+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { HeaderComponent } from './header.component';
+
+describe('HeaderComponent', () => {
+  let component: HeaderComponent;
+  let fixture: ComponentFixture<HeaderComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [HeaderComponent]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(HeaderComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/header/header.component.ts

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