question_options should be allowed to be a list of strings or numbers

[rbyh]

I want to create multiple choice, checkbox, rank, etc., question types where the agent is prompted to select among answer options that are lists, but lists are not allowed.

To reproduce:

options = [[1,2,3], [4,5,6], [7,8,9]]

from edsl.questions import QuestionMultipleChoice

q_choice = QuestionMultipleChoice(
    question_name = "choice",
    question_text = "Which is the best list of numbers?",
    question_options = options
)

Error that is thrown:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[21], line 3
      1 from edsl.questions import QuestionMultipleChoice
----> 3 q_choice = QuestionMultipleChoice(
      4     question_name = "choice",
      5     question_text = "Which is the best list of numbers?",
      6     question_options = options
      7 )

File [~/edsl/edsl/questions/QuestionMultipleChoice.py:35](http://localhost:8888/lab/tree/~/edsl/edsl/questions/QuestionMultipleChoice.py#line=34), in QuestionMultipleChoice.__init__(self, question_name, question_text, question_options)
     33 self.question_name = question_name
     34 self.question_text = question_text
---> 35 self.question_options = question_options

File [~/edsl/edsl/questions/descriptors.py:57](http://localhost:8888/lab/tree/~/edsl/edsl/questions/descriptors.py#line=56), in BaseDescriptor.__set__(self, instance, value)
     55 def __set__(self, instance, value: Any) -> None:
     56     """Set the value of the attribute."""
---> 57     self.validate(value, instance)
     58     instance.__dict__[self.name] = value
     59     if self.name == "_instructions":

File [~/edsl/edsl/questions/descriptors.py:261](http://localhost:8888/lab/tree/~/edsl/edsl/questions/descriptors.py#line=260), in QuestionOptionsDescriptor.validate(self, value, instance)
    257 if len(value) < Settings.MIN_NUM_OPTIONS:
    258     raise QuestionCreationValidationError(
    259         f"Too few question options (got {value})."
    260     )
--> 261 if len(value) != len(set(value)):
    262     raise QuestionCreationValidationError(
    263         f"Question options must be unique (got {value})."
    264     )
    265 if not self.linear_scale:

TypeError: unhashable type: 'list'

[rbyh]

We should also allow numbers as options for QuestionMultipleChoice
It is not obvious that you need to convert to strings "1", 10", etc.

[rbyh]

Thanks!