nip11: add "supported_grasps" special field.

khatru/grasp/server.go

@@ -51,6 +51,9 @@ func New(rl *khatru.Relay, repositoryDir string) *GraspServer {
 		},
 	}
 
+	rl.Info.AddSupportedNIP(34)
+	rl.Info.SupportedGrasps = append(rl.Info.SupportedGrasps, "GRASP-01")
+
 	base := rl.Router()
 	mux := http.NewServeMux()
 

nip11/types.go

@@ -28,6 +28,9 @@ type RelayInformationDocument struct {
 	Retention      []*RelayRetentionDocument `json:"retention,omitempty"`
 	Icon           string                    `json:"icon,omitempty"`
 	Banner         string                    `json:"banner,omitempty"`
+
+	// nip-34 grasp stuff
+	SupportedGrasps []string `json:"supported_grasps,omitempty"`
 }
 
 func (info *RelayInformationDocument) AddSupportedNIP(number int) {