feat(socketio): allow injecting the disconnection reason

[derevnjuk]

Information

Type	Breaking change
Feature	No

---

Usage example

This decorator is used in conjunction with the $onDisconnect event handler to handle disconnection reasons in SocketIO services.
It allows you to access the reason for the disconnection in your method implementation. For details please refer to the Socket.io documentation.

@SocketService("/nsp")
export class MyWS {
  public async $onDisconnect(
    @Reason reason: string = ''
  ) {
     // your implementation
  }
}

Todos

• Tests
• Coverage
• Example
• Documentation

closes #2372

[Romakita]

Hello @derevnjuk
Just only one cosmetic change ;)

Really nice PR!

[Romakita]

Go to merge ;)

[Romakita]

🎉 This PR is included in version 7.33.0 🎉

The release is available on:

• v7.33.0
• GitHub release

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