Add `role` to` User.create` method in signup function

[lexliu19]

In Authorization: User Roles and Permissions chapter, we need to add role: req.body.role, to signup function, otherwise, the user role will always be default "user" and never updated to req.body.role

exports.signup = catchAsyncError(async (req, res, next) => {
  const newUser = await User.create({
    name: req.body.name,
    email: req.body.email,
    password: req.body.password,
    passwordConfirm: req.body.passwordConfirm,
    role: req.body.role,
  });
....
}

[thakareniraj]

Hello < @LexieLiu19 , I wanted to request your permission to assign the open issue to me. Please let me know if it's okay to proceed with this assignment.

[Medo3-coder]

thank u @LexieLiu19