Feature request: Update Xray core and add Sing-box support

[amirdel88]

First of all, many thanks to the Mahsanet team for maintaining and improving this package — your work is much appreciated.

I have two requests:

1. Xray core update
   Please provide guidance or a documented procedure for updating the Xray core to the latest version. This would help users keep their deployments secure and up-to-date.

2. Sing-box core support
   Would it be possible to add support for the Sing-box core in upcoming releases? If so, I’d like to request this as a new feature, since Sing-box offers additional configuration flexibility and performance improvements for certain use cases.

I’m happy to provide any additional information or assist with testing if needed.