[Prototype] Add attribute definitions about docs-website HOT 2 CLOSED

We should determine whether we want .mdx files for each attribute definition or whether we should consider storing the data in JSON and sourcing that with both the createPage API and a template that can pull from that data.

from docs-website.

Yep, agree. I think ideally it would be stored in JSON. We would just have to figure out a way to make that JSON:

• editable in a way non-technical authors can access it
• available to docs front end for users to search/filter through all available events/attributes
• available via HTTP call at an endpoint so it's still consumable in roughly the same way it is today by data dictionary

from docs-website.