Allow upgrading to the latest version of Nitrox from the launcher

[3cxc]

Describe the issue

Currently, to update Nitrox, we need to be redirected from the launcher to GitHub for the download.

Is it possible for us to enable direct downloading from within the launcher and have it automatically install? This would be much more convenient.

[Andbli]

I second this! Having built-in updates would be much more convenient than manually replacing files every time a new version is released. It would also make hotfixes easier to deploy and encourage more feedback on the latest version, since updates wouldn’t be as tedious to perform, reducing the chances of people delaying them.