Document LabObject Groups

[jcourt325]

I'm thinking a table, where each row is a type, listing the group name on the left, and a list of functions that it must implement on the right.

I know of at least these groups:

• Container
• Heatable
• Weighable
• LabObjects
• SubsceneManagers

We should also probably have a list of special one off groups, like "Gel Boat".

I think this Issue can mostly just be for adding a place in the documentation to list these.

[tylerhand1]

I agree that a table seems like an easy way to document these groups.

I do think we should have two separate tables instead of one, as some are substance-only like:

• Granular Substance
• Solid Substance
• Liquid Substance
• Etc.