feat: add full SDL to SupGraph response

graph/model/models_gen.go

@@ -62,6 +62,7 @@ type SubGraph struct {
 type SubGraphs struct {
 	ID              string      `json:"id"`
 	MinDelaySeconds int         `json:"minDelaySeconds"`
+	Sdl             string      `json:"sdl"`
 	SubGraphs       []*SubGraph `json:"subGraphs"`
 }