add search data to component and add doc pages (closes #84)

[joehand]

Thanks for the nice starter! Here is an attempt at adding the doc pages to the search (#84). You should be more easily able to add any other nodes too since it is all done inside the component now.

• Moves search data to the component as a static query
• Adds doc pages to search query data

Used this repo as an example. You could also add in headings (though need to change the UI).

[drehimself]

Thank you! This is great.

It didn't occur to me that you can just query the types directly using GraphQL. MUCH cleaner than doing it in gridsome.server.js.