feat: log graphql requests

[jsstevenson]

This PR grabs the query type and the declared variables and logs them.

A couple notes/TODO's

• Aspirationally I wanted to see if we could be grabbing whether or not specific parameters get used under the Drug node, but it seems kind of complicated to figure that out (is there a reasonable way to tell if a query includes a drug node at all? I'm not sure)

[jsstevenson]

^

[acoffman]

You might want to double check that it works as expected, but it looks like (based on this example here) you can set an HTTP Header when your initialize the graphql client.

That might be better than stapling it into each query individually.

[jsstevenson]

@acoffman yeah, I was a little unsure of whether we wanted to set different headers for different queries and to filter out noisier or less informative ones. We should probably set a base one at client initialization and then maybe use an additional one for chosen queries if we go that route.