Adds Dominator Guns [Poll Ongoing]

## Dominators:
- A Unique gun that requires the user to have Security access to fire it.
- The Gun will NOT fire if the user is a criminal
- The Gun will NOT stun the target if the target is not a criminal (If you're shot with this, and it stuns you, you literally can't scream "shitcurity" because you need to be in the Sec Records listed as a criminal)
- The Beepsky sec record trick DOES work with Dominators

## Specs:
- Double the Taser's Stun
- Double the Taser's Weaken
- Double the Taser's Ammo

## Code Extras:
- Adds a human helper proc "IsCriminal()" which checks for valid criminal ranks in Sec Records

<b>Thread:</b> http://tgstation13.org/phpBB/viewtopic.php?f=15&t=387