feat(oauth/handler): add client name and uri to metadata responses

Signed-off-by: brookjeynes <[e-mail]>

internal/server/oauth/consts.go

···
 package oauth
 
 const (
+	ClientName           = "Yoten"
+	ClientURI            = "yoten.app"
 	SessionName          = "yoten-oauth-session-v2"
 	SessionHandle        = "handle"
 	SessionDid           = "did"

internal/server/oauth/handler.go

···
 }
 
 func (o *OAuth) clientMetadata(w http.ResponseWriter, r *http.Request) {
+	clientName := ClientName
+	clientUri := ClientURI
+
 	doc := o.ClientApp.Config.ClientMetadata()
 	doc.JWKSURI = &o.JwksUri
+	doc.ClientName = &clientName
+	doc.ClientURI = &clientUri
 
 	w.Header().Set("Content-Type", "application/json")
 	if err := json.NewEncoder(w).Encode(doc); err != nil {