Gorm Please add support Fiber.Map for parameter and result

Describe the feature

make fiber.Map for parameter and result rather than write result := map[string]interface{}{} example :

func GetUserAdmin()fiber.Map{
  param := fiber.Map{"username":"admin"}
  result :=fiber.Map{}
  db.Raw("select * from user where username = @username", param).Scan(&result)
  return result
}

Motivation

make it more simple and more easier when used with fiber.

Related Issues

Comment From: li-jin-gou

@tercnem Won't use a three-way library in github.com/go-gorm/gorm