Basic WebSocket implementaion

Downgrade to Socket.io 2.3.0

src/app/hello/hello.component.ts

@@ -0,0 +1,15 @@
+import { Component, OnInit } from '@angular/core';
+
+@Component({
+  selector: 'app-hello',
+  templateUrl: './hello.component.html',
+  styleUrls: ['./hello.component.css']
+})
+export class HelloComponent implements OnInit {
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}