Adding TypeScript boilerplate code with authentication, room, and namespace examples

[ahsanaasim]

What's in this pull request?

This pull request adds a TypeScript boilerplate code to Socket.IO, which includes an example of authentication to secure the socket server and usage examples for rooms and namespaces.

The example consists of

• [x] A basic auth implementation for Socket.IO
• [x] A Socket class that creates namespaces and rooms
• [x] Examples demonstrating how to emit messages within a room and globally.
• [x] A blog post created by me that explains the entire process and can be found in the README file.

This code can help other developers to build more secure and scalable Socket.IO applications with TypeScript.