Mediborg Hacked Hypospray rework

[Magisterium2022]

Added in hacked hypospray module for emagged standard mediborg, containing a variety of dangerous toxins, to replace the previous presumably interim system.

Changelog:

Added in two lines of code to Borghydro: /obj/item/reagent_containers/hypospray/borghypo/hacked reagent_ids = list(/decl/reagent/toxin/zombiepowder, /decl/reagent/toxin/cyanide, /decl/reagent/polysomnine, /decl/reagent/toxin/panotoxin, /decl/reagent/toxin/berserk, /decl/reagent/wulumunusha)

This adds a hacked borg hypospray with the above reagents to emagged Mediborgs.

Changed two line of code in Borg modules, replacing the stand-in hacked dispenser with a limited supply of a singular reagent with this more versatile system. Changed the name appropriately.

Removed one line of code: Removed a single line of code relating to the filling of the previous dispenser, now unnecessary.