[feat]: Warning that game is unsupported when you are trying to install it

### Feature description Pls make a warning if you want to download an unsupported game (like Fortnite) that stops you from downloading it. This would help a lot bc then you would not waste a lot of time downloading a game you can’t play ### Before submitting - [x] I've made research efforts and searched the documentation - [x] I've searched for existing issues and PRs