[WIP] Goon Chemistry

This is a port of Goonstation's Chemicals and Recipes.

It is a work in progress.

Currently has:
Most of the medicines, excluding a few that require chemicals not yet added in such as Sarin and Itching Powder.
A few of the toxins.
Hairgrownium, for shits and giggles.
Traitor Poison Bottle to obtain some of the poisons.

Next on the plan list:
The rest of the Toxins, including Sarin

In the future:
All the recipes and chemicals

Notes:
Secret chems will have different recipes from those on goon unless I can secure permission for a few select ones such as Grog.
Should we be using these `goon_` prefixes?  Also, a lot of these are missing the first slash.  Not that they're required, but the whole purpose of using these absolute paths is to make things more searchable.