[feature request] add local multiplayer

[Shkzeen]

Is your feature request related to a problem? Please describe. I'm always frustrated when I'm unable to play with my friends that have IOS devices, so I'd like the ability to play locally on my device.

Describe the solution you'd like adding local multiplayer support (turns, pass device on, etc.)

Describe alternatives you've considered chess.com doesn't support chaos :( Additional context thanks for reading! :D