Update Serializer/Deserializer classes for improved handling of write/read path setup

Currently in the various Serializer/Deserializer classes, the path variables used for writing data and typing info files are created and modified in various methods throughout the class during the serialization/deserialization process flow.

This approach should be reviewed and, if possible, all of the path setup information should be moved into the `__init__` methods of the classes. This would make the code more readable and maintainable by having all the path logic contained in a single place rather than spread across multiple methods.