Implement binary literal parsing (#3439)

This patch will allow the user to use binary literals starting with 0b or 0B,
these literals will be evaluated in parsing time resulting an integer

Co-authored-by: Robert Fancsik frobert@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Adam Szilagyi aszilagy@inf.u-szeged.hu

jerry-core/parser/js/js-parser-util.c

@@ -836,6 +836,12 @@ parser_error_to_string (parser_error_t error) /**< error code */
     {
       return "Invalid hexadecimal digit.";
     }
+#if ENABLED (JERRY_ES2015)
+    case PARSER_ERR_INVALID_BIN_DIGIT:
+    {
+      return "Invalid binary digit.";
+    }
+#endif /* ENABLED (JERRY_ES2015) */
     case PARSER_ERR_INVALID_ESCAPE_SEQUENCE:
     {
       return "Invalid escape sequence.";