[feature]Auth list for join/quit

[edunham]

So that random folks in the channel can't quit Hamper out.

The only actions I can think of which warrant an auth list are quit and possibly figlet, though more may be added later.

The person who initially instructs Hamper to join a given channel should be authed for that channel, as should all of that channel's ops and voices. Then anyone on that auth list should be able to add others to it.

It'd be good for the auth list to persist across restarts of the bot. For a given channel A, the list should be displayed:

• if anyone asks for it in channel A
• If any person in channel A asks for it via PM
• if a person on channel A's auth list asks for it in channel B (where of course the same instance of Hamper is running)

Anyone can remove themself from a channel's auth list. Only a channel op can remove people other than themself from that channel's list, or clear the list.

Thoughts?

[justinnoah]

@mythmon We have some acl code, does that cover this and if so, time to close?