Implement reset command?

[FastLizard4]

Implement a reset command, usable by channel operators or by users with a specific ACL authorization, that clears all waiting input to be processed by the bot.

Use case: Someone spams the bot with a large sequence of semicolon-delimited commands (e.g., ?roulette; ?roulette; ?roulette; ?roulette; ?roulette; ..., and you want to clear the unprocessed commands from the queue.

I'm not actually sure if this is possible to even implement given the way PircBotX is architectured, so that will need investigating first. Concurrency problems may also prevent implementation of this.

[FastLizard4]

Per TLUL on IRC, not possible to implement until we move away from PircBotX for IRC protocol support.