New chemical based artifact nodes (#30873)

New chemical based artifact nodes (#30873)

* Initial pH nodes, and description changes to indicate pH

* Psychoactive and stimulant nodes, Medical foundation, bioreactive hint

* Added medical reagents to medical node. Added norepinephric acid to acidic and made up a pH

* Added pyrotechnic chem node, and corresponding hint

* spelled psychedelic correctly

* Fixed capitalisation skill issue

* fixed indentation skill issue

* fixed a further indentation skill issue

* Removed extraneous whitespace

* Replaced bioreactive with theraputic and psychoactive. Also fixed typo skill issue.

* removed unnecessary comment

* Replaced heartbreaker with THC for psychadelic

* removed artifexium from acidic

* added tran acid to acidic

* added more medical chems

* removed pH values

* removed all but medical