Add support to return int based value from native functions golang implementations

Author: rohitjangid

interpreter.go

@@ -949,6 +949,8 @@ func jsonToValue(i *interpreter, v interface{}) (value, error) {
 
 	case bool:
 		return makeValueBoolean(v), nil
+	case int, int8, int16, int32, int64:
+		return makeDoubleCheck(i, v.(float64))
 	case float64:
 		return makeDoubleCheck(i, v)