Class: Class LDLMS_Base_Answer_Type
Method: Add necessary hooks, call other setup actions.
Method: Answer key. questionID + position.
Method: Get answers data in the form of array.
Method: Get submitted answers data in form of array.
Method: Add answer_text node to response object.
Method: If individual answers points are activated, add points field to each answer.
Method: Add the values in form of array for all possible answers.