[Server] Admin endpoint to send notification to players in a game

[QuinnBast]

Enhancement Description

Implement an admin endpoint to send a push notification to all players that are within a specific game.

Solution

rpc NotifyPlayersInLobby(NotifyPlayersInLobbyRequest) returns NotifyPlayersInLobbyResponse {}

This will depend on the task to add push notifications

[QuinnBast]

Still relevant, but we don’t need a new method for this. Just create a GameEvent that admins can submit