Changes in chemicals page in guidebook (#25831)

Changes in chemicals page in guidebook (#25831)

* Added pages to chemical categories

The chemical categories have their own page now. Added the "Chemical Tabs" in /ServerInfo/Guidebook. Moved the Chemicals code from shiftsandjobs.yml to its own .yml file which is "chemicals.yml".

* Update guides.ftl

* Update chemicals.yml

Changed the guide entry's ID for the medical tab from Medicine to Medicinal.
Hope this works...

* Update Resources/ServerInfo/Guidebook/Chemical Tabs/Biological.xml

Co-authored-by: exincore <me@exin.xyz>
* Update Resources/ServerInfo/Guidebook/Chemical Tabs/Foods.xml

Co-authored-by: exincore <me@exin.xyz>
* Update Resources/ServerInfo/Guidebook/Chemical Tabs/Elements.xml

Co-authored-by: exincore <me@exin.xyz>
* Update Resources/ServerInfo/Guidebook/Chemical Tabs/Narcotics.xml

Co-authored-by: exincore <me@exin.xyz>
* Update Resources/ServerInfo/Guidebook/Chemical Tabs/Toxins.xml

Co-authored-by: exincore <me@exin.xyz>
* Fixed a few errors and stuff!

A few typos have been fixed thanks to exincore. Added dedicated .xml files to be used for the dedicated category pages (Medicinal and Botanical pages). Made it so it doesn't use any duplicated IDs anymore.
If there's more problems, please do tell so I can fix it!

* Update settings.json

* Fix?

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Co-authored-by: exincore <me@exin.xyz>