/leave should require confirmation when participating in a game

[FRQDO]

Players can destroy a running game by accidentally tapping the /leave command suggestion instead of /logs.

Leaving a game without having to confirm should only be possible if

• Leaving player is a spectator
• Leaving player is dead
• Game is in state ACCEPT_PLAYERS
• Game is in state GAME_OVER

[DerMolly]

What should the syntax be like?
Like the /restart confirm Command or should the bot message the person privately and display the question with options like policy picks?

[FRQDO]

Commands that require a conscious choice and are not used as frequently as, for instance, /enact F (e.g. really restarting the bot even though it cancels running games) should always require users to type them out, I think.
Otherwise, we merely add a second layer of “oops I accidentally touched the wrong thing” protection.