Add syntax to build links in graph for the query output

[laraib07]

The idea is simple. I am querying list of books in a central note.

TABLE author, highlightCounts
FROM book_highlights

It would be better if the syntax had option to build a graph too. Like:

TABLE author, highlightCounts
FROM book_highlights
BUILD GRAPH

[blacksmithgu]

In dataview I guess this would end up specifically being something like

GRAPH author, highlightCounts FROM book_highlights

Charting/graphing is actually a pretty big area in general (tons and tons of customization that people are likely going to want to do); I'm likely going to add this as a separate smaller plugin.