feat: Update QA rest engine to support enabling and disabling QA cate…

…gories when using the API

Signed-off-by: Akash Nayak <[email protected]>

qaengine/httprestengine.go

@@ -99,6 +99,16 @@ func (h *HTTPRESTEngine) FetchAnswer(prob qatypes.Problem) (qatypes.Problem, err
 	if err := ValidateProblem(prob); err != nil {
 		return prob, fmt.Errorf("the QA problem object is invalid. Error: %w", err)
 	}
+	probCategories := qatypes.GetProblemCategories(prob.ID, prob.Categories)
+	for _, category := range probCategories {
+		if common.IsStringPresent(common.DisabledCategories, category) {
+			if err := prob.SetAnswer(prob.Default, true); err != nil {
+				return prob, fmt.Errorf("failed to set the given solution as the answer. Error: %w", err)
+			}
+			return prob, nil
+		}
+	}
+
 	if prob.Answer != nil {
 		return prob, nil
 	}