Sandbox Improvements

A set of tools to make sandbox more powerful and easy to use.

Hotkeys for various hooks that may happen during a game, allowing cards that rely on hooks to be used in sandbox.
Hotkey to toggle sandbox AI off and on.
Map selection menu in sandbox, similar to Unbound's map toggle menu. Works as an alternative to the "/" command.
Card spawning menu in sandbox, similar to Unbound's card toggle menu. Works as an alternative to the chat.
- This menu also allows you to directly add cards to players in Sandbox.