chore: move the go code into a subfolder

apps/api/internal/user/model/refresh_token.go

@@ -0,0 +1,19 @@
+package model
+
+import (
+	"time"
+
+	es_models "github.com/zitadel/zitadel/internal/eventstore/v1/models"
+)
+
+type RefreshToken struct {
+	es_models.ObjectRoot
+
+	TokenID           string
+	ApplicationID     string
+	UserAgentID       string
+	Audience          []string
+	Expiration        time.Time
+	Scopes            []string
+	PreferredLanguage string
+}