Allow remote control / projected mode

[jkomoros]

When playing games either in the same physical space or remotely over VC, a nice pattern is the remote control / projected shared screen.

The projected shared screen shows all of the visible state any observer could see.

And then each user's private screen shows just the private information they need to see, instead of a shrunk version of the whole game board.

Jack Box TV games do this especially well.

This could be a mode that a game could express that it offers by having a private-remote-renderer that is a per-player private state. Some games might support that mode, but also want to run in normal mobile mode. Maybe allow a user to turn off that mode if they want, but have games that support it default to having it on?

[jkomoros]

In remote mode, cards that animate to a different stack should fly off the top of the screen (have faux stacks to animate to positioned off screen?)