Add Install-Games.ps1 script that downloads and launches official game installers marked with autoinstall=true in installers.json.
The script:
- Downloads installers from official Riot servers (not redistributed by FWS)
- Supports silent installation via configurable arguments
- Handles TLS 1.2 compatibility for older .NET stacks
- Provides user feedback and error handling for download/launch failures
- Note: Valorant installation requires manual confirmation due to Vanguard kernel driver and mandatory restart
