Nerfs stuns on being shocked

[Inadvizable]

What Does This PR Do

The 10 seconds combined (4s standing up 6s laying down) stun on being shocked has been replaced with 1 second of stun and 6 seconds of knockdown.

Grilles and airlocks now have a 2 second cooldown (up from 1). This means you can crawl through a shocked airlock right after it has zapped you - though this isn't a good trespass strategy because getting shocked hurts, and the resulting damage and knockdown will still heavily mess you up in a chase. This also means you can't be easily repeatedly pushed into a door and stunlocked.

Part of @hal9000PR stun removal project.

Why It's Good For The Game

Getting shocked is a common occurence, but it applies an enormous stun. This can be used and abused, I am sure anyone who has played security enough knows the pain of an antag with insuls cutting wires on every damn maint airlock and stopping all chases completely dead - and any antag that has been round-ended by an AI also should understand it (hi wizards). This nerfs strategies that overly rely on door shocks, though door shocking remains strong, as the conditions it causes are still significant.

Aside from balance, this also makes mundane shocks, like a greytider shocking a vendor, much less frustrating.

Images of changes

After some messing around, I think this looks and feels modern and nice.

Changelog

🆑
tweak: Getting shocked now stuns for 1 second and knocks down for 6 seconds, instead of stunning for 4 seconds and then stunning again for 6 seconds. The shock cooldown on grilles and airlocks is now 2 seconds, up from 1.
/:cl:

[Carthusia]

This also would help prevent the dreaded "Atmos Shock" (Noideaifanyoneelsecallsitthis)

Where atmos pressure moves you towards a shocked grill, and repeatedly shocks you forever trying to push you through it, turning you into a burned BBQ steak

[Inadvizable]

This also would help prevent the dreaded "Atmos Shock" (Noideaifanyoneelsecallsitthis)

Where atmos pressure moves you towards a shocked grill, and repeatedly shocks you forever trying to push you through it, turning you into a burned BBQ steak

I haven't tested if it's enough to save you in that situation but it definitely gives you a fighting chance.