BE: Account for fields needed for different question types

[bofstein]

The database for questions right now just has text, requirements, guidance, and sample text. We also have question type as an ID but need to be able to add additional relevant fields. E.g. multiple choice questions like radio buttons need fields to allow us to handle the response options entered by the user.

[bofstein]

Need a Question Option model and table - the rest should be there
Allows for multiple choice and single select
Value for Default answer option(s) selected by template creator
Resolvers updated