[ Feature ] Add an auto updater

[gavinnn101]

There should be a feature to automatically detect and download the newest version of the script. This should be a setting to turn off/on in case we don't want update all clients.

It could be really useful to have an option to choose to update from stable or testing branches.

If we write an updater, it would probably be a good time to implement a build script that updates, then packs with pyarmor, then distributes the obfuscated script. Just writing the updater we could serve the zip but if we do the obfuscation I think we'll need to compile it on our side and then distribute a zip of the obfuscated source. This would probably be really useful, just potentially a rabbit hole of dev work.