config.go
func LoadWithEnvTOML(conf interface{}, configPaths ...string) error {
	return loadWithFunc(conf, configPaths, envReplacer, toml.Unmarshal)
}
func LoadWithEnvTOML(conf interface{}, configPaths ...string) error {
	return loadWithFunc(conf, configPaths, envReplacer, toml.Unmarshal)
}
// LoadWithEnvTOML loads TOML files with Env