chore: make authz recorder opt in (#20310)

The authz recorder is causing a lot of memory to be allocated, and is a
memory leak for websocket connections.

This change makes it opt-in on a per request basis (ontop of `isDev`).
To get the authz headers, use `Copy as cURL` on chrome and append the
header `x-authz-checks=true`.

coderd/coderd.go

@@ -493,7 +493,7 @@ func New(options *Options) *API {
 	// We add this middleware early, to make sure that authorization checks made
 	// by other middleware get recorded.
 	if buildinfo.IsDev() {
-		r.Use(httpmw.RecordAuthzChecks)
+		r.Use(httpmw.RecordAuthzChecks(options.DeploymentValues.EnableAuthzRecording.Value()))
 	}
 
 	ctx, cancel := context.WithCancel(context.Background())