Refactor IP copy functionality into a reusable component

Extracted the "Copy IP" button to a new `CopyIpComponent` to improve reusability and modularity. Updated `HomeComponent` to use this new component and removed redundant methods for copying text to the clipboard. Added tests and styles for the new component.

frontend/src/app/copy-ip/copy-ip.component.html

@@ -0,0 +1,3 @@
+<button type="button" style="margin-top: 50px;" class="button-outer" (click)="copyIpToClipboard()">
+  <span class="button-inner">{{ displayText }}</span>
+</button>

frontend/src/app/copy-ip/copy-ip.component.spec.ts

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

frontend/src/app/copy-ip/copy-ip.component.ts

@@ -0,0 +1,16 @@
+import {Component} from '@angular/core';
+
+@Component({
+  selector: 'app-copy-ip',
+  templateUrl: './copy-ip.component.html',
+  styleUrl: './copy-ip.component.scss'
+})
+export class CopyIpComponent {
+  public displayText: string = 'Copy IP'
+
+  public copyIpToClipboard(): void {
+    navigator.clipboard.writeText('play.alttd.com');
+    this.displayText = 'Copied!';
+  }
+
+}