feat: add email field component with styling and basic functionality

frontend/src/app/atomic/input/email-field/email-field.component.css

@@ -0,0 +1,17 @@
+input {
+    background-color: rgba(132, 129, 122, 1.0);
+    border: none;
+    font-size: 1.2em;
+    line-height: 2.5em;
+    width: 100%;
+    text-align: center;
+    border-radius: 5px;
+    color: var(--primary-text-color);
+}
+
+input:focus {
+    outline-color: var(--primary-background-color);
+    outline-width: 100px;
+    /*outline-offset: 1px;*/
+    /*outline-style: auto;*/
+}

frontend/src/app/atomic/input/email-field/email-field.component.html

@@ -0,0 +1 @@
+<input type="email" [value]="value ? value : ''"/>

frontend/src/app/atomic/input/email-field/email-field.component.spec.ts

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

frontend/src/app/atomic/input/email-field/email-field.component.ts

@@ -0,0 +1,12 @@
+import {Component, EventEmitter, Input, Output} from '@angular/core';
+
+@Component({
+    selector: 'atomic-email-field',
+    imports: [],
+    templateUrl: './email-field.component.html',
+    styleUrl: './email-field.component.css'
+})
+export class EmailFieldComponent {
+    @Input() value?: string;
+    @Output() valueChange = new EventEmitter<string>();
+}