Getting rid of the porcupine-python dependency

[Sibyx]

We're currently using porcupine-python for object serialization in our EvilFlowersCatalog project. However, we've hit a bit of a roadblock. Our project is dependent on pydantic 1.x because of porcupine-python, and it's starting to limit our progress. We're keen to overcome this challenge and are looking for alternatives to enhance our object serialization process. One idea we have is to use pydantic 2.x directly.

This issue is currently blocking #2