Auth disk shuttle emag

[glowbold]

3 IDs lower the time to 60 seconds already. given that the shuttle boarding time is two minutes, it rarely happens.

i don't know how i feel about this change because i haven't really seen it. but if it is as i understand it -- that the authentication disk can lower it to 10 seconds on use, and the emag does nothing -- then... mmh. i do not like that a crew item like that can be used to do what is effectively a really rude antag action.

that said, i haven't really seen it. i have been on rp most of the time (where shuttle emags are typically were not done anyway), so i'm not sure how much of an effect it has.

but it would be neat if it offered an immediate option to, say, extend the shuttle boarding time by a minute or two (or drop it to 60/30 seconds). give people a bit more time to board or get out faster, rather than just *snap gone

I added extension during dev of this change. Maybe making it an option to shorten/lengthen instead would make more sense?