Makes the armory auth cancelable by the HoS

[Arthur-Holiday]

[BALANCE] [INPUT WANTED] [WIKI]

About the PR

Makes the HoS able to unauth the armory, it has a cooldown to prevent spamming auth messages, 5 minutes, might be too much, unsure, one thing I wish I had done but I couldn't wrap my head around it was making unauthing it send a pda message to the sec mail group, I am also unsure if the sounds I used are good, they were the best things I could think of, I am taking suggestions.

Why's this needed?

It is a pretty common request from HoS players as there is currently no way of closing the armory after it has been authorized.

Changelog

(u)Arthur Holiday
(*)The HoS can now unauthorize the armory.

[github-actions]

Created discussion thread: https://forum.ss13.co/showthread.php?tid=16330

[Azrun]

Should be able to get packet support mentioned by copying the block at line 80 and abusing for unauthorize then doing the same for the help message copying from line 75.

And for PDA messages poke around where MGD_SECURITY is used.
TEG event does something similar but for a different message group, I don't remember where I stole that code from:

goonstation/code/modules/events/vamp_teg.dm

Line 183 in f50f9a2

var/datum/signal/signal = get_free_signal()

[github-actions]

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