feat: set dir for storages

dao/callback_data.go

@@ -0,0 +1,19 @@
+package dao
+
+func CreateCallbackData(data string) (uint, error) {
+	callbackData := CallbackData{
+		Data: data,
+	}
+	err := db.Create(&callbackData).Error
+	return callbackData.ID, err
+}
+
+func GetCallbackData(id uint) (string, error) {
+	var callbackData CallbackData
+	err := db.First(&callbackData, id).Error
+	return callbackData.Data, err
+}
+
+func DeleteCallbackData(id uint) error {
+	return db.Unscoped().Where("id = ?", id).Delete(&CallbackData{}).Error
+}