Consider implementing `carton deploy` command

[MaxDesiatov]

This should simplify deployment to common environments such as GitHub Pages, Netlify, S3/CloudFront, Cloudflare etc. Given that there's still a possibility for carton to become a tool supporting cross-compilation of Swift apps to multiple platforms (I primarily have Android in mind, but Windows and Linux/Docker are possible directions too), maybe this should be implemented as plugins, or separate executables that carton could delegate to. E.g. for Android it could deploy to an emulator, real device, Play Store etc.