Use Pydantic for CodeTF data models

[drdavella]

Pydantic enables automatic validation of data models: https://docs.pydantic.dev/latest/

We should use Pydantic to define our CodeTF data structures to enable automatic serialization and validation.

[hamzasial1911]

can you assign this ticket to me? @drdavella

[drdavella]

Hi @hamzasial1911 thanks for your interest in contributing! This work is already in progress but if you'd like to choose another issue please let me know.

[drdavella]

Closed by #357.