feat: add multi choice submission logic

src/i18n/en/submissions.json

@@ -4,7 +4,8 @@
     "questionId": "Question's Id",
     "submission": "Submission",
     "submissionId": "Submission's Id",
-    "choiceId": "Choice's Id"
+    "choiceId": "Choice's Id",
+    "choiceIds": "Choice Ids list"
   },
   "errors": {
     "alreadyTookTest": "You already took this test.",
@@ -12,6 +13,7 @@
     "emptyNumericValue": "A numeric value should be provided as answer.",
     "numericValueRange": "Numeric value is out of specified range.",
     "emptyChoiceId": "Choice Id should be provided as answer.",
+    "emptyChoiceIds": "Choice Ids should be provided as answer.",
     "transitionNotFound": "No transition found for the test",
     "uniqueSubmissionQuestion": "Question's Answer already exists."
   }