EMP-kit

EMP grenades saw nearly no use. They were awkward to use in combat (unlike a flashbang they didn't stop your target from running) and even more awkward for stealth due to the 10 range light EMP setting off cameras. This change intends to offer less "nuclear" options to use EMPs as a traitor. 

Adds EMP-implant. (3 heavy range 5 weak range EMP, useful if a borg stuns you).
Adds EMP-flashlight (5 uses in melee range on any object or mob you click, disables headsets and opens lockers/crates).

Replaced the EMP grenades from the uplink with an EMP kit.
The kit  (3 TK) contains:
1 grenade
1 implant
1 EMP-flashlight